TCrB Diagramm verbessert

config/filter_colors.json

@@ -0,0 +1,67 @@
+{
+  "U": {
+    "wavelength_nm": 366.3,
+    "color": "#1B2A6B",
+    "description": "Johnson U, Ultraviolett, ca. 366,3 nm"
+  },
+  "B": {
+    "wavelength_nm": 436.1,
+    "color": "#1D00FF",
+    "description": "Johnson B, Blau, ca. 436,1 nm"
+  },
+  "SG": {
+    "wavelength_nm": 477.0,
+    "color": "#00C8FF",
+    "description": "Sloan g, ca. 477,0 nm"
+  },
+  "TB": {
+    "wavelength_nm": 440.0,
+    "color": "#0000FF",
+    "description": "DSLR/OSC Blaukanal, ca. 440,0 nm"
+  },
+  "V": {
+    "wavelength_nm": 544.8,
+    "color": "#92FF00",
+    "description": "Johnson V, visuell/gruen, ca. 544,8 nm"
+  },
+  "TG": {
+    "wavelength_nm": 544.8,
+    "color": "#92FF00",
+    "description": "DSLR/OSC Gruenkanal, ca. 544,8 nm"
+  },
+  "CV": {
+    "wavelength_nm": 544.8,
+    "color": "#92FF00",
+    "description": "Clear auf V referenziert, ca. 544,8 nm"
+  },
+  "SR": {
+    "wavelength_nm": 623.1,
+    "color": "#FF6B00",
+    "description": "Sloan r, ca. 623,1 nm"
+  },
+  "R": {
+    "wavelength_nm": 640.7,
+    "color": "#FF1D00",
+    "description": "Cousins R, Rot, ca. 640,7 nm"
+  },
+  "TR": {
+    "wavelength_nm": 640.7,
+    "color": "#FF1D00",
+    "description": "DSLR/OSC Rotkanal, ca. 640,7 nm"
+  },
+  "SI": {
+    "wavelength_nm": 762.5,
+    "color": "#870000",
+    "description": "Sloan i, ca. 762,5 nm"
+  },
+  "I": {
+    "wavelength_nm": 798.0,
+    "color": "#7A0018",
+    "description": "Cousins I, nahes Infrarot, ca. 798,0 nm"
+  },
+  "SZ": {
+    "wavelength_nm": 909.7,
+    "color": "#7A0018",
+    "description": "Sloan z, ca. 909,7 nm"
+  }
+}

public/py/filter_colors.py

@@ -0,0 +1,117 @@
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+
+FILTER_WAVELENGTHS_NM: dict[str, float] = {
+    "U": 366.3,
+    "B": 436.1,
+    "SG": 477.0,
+    "TB": 440.0,
+    "V": 544.8,
+    "TG": 544.8,
+    "CV": 544.8,
+    "SR": 623.1,
+    "R": 640.7,
+    "TR": 640.7,
+    "SI": 762.5,
+    "I": 798.0,
+    "SZ": 909.7,
+}
+
+
+FILTER_DESCRIPTIONS: dict[str, str] = {
+    "U": "Johnson U, Ultraviolett, ca. 366,3 nm",
+    "B": "Johnson B, Blau, ca. 436,1 nm",
+    "SG": "Sloan g, ca. 477,0 nm",
+    "TB": "DSLR/OSC Blaukanal, ca. 440,0 nm",
+    "V": "Johnson V, visuell/gruen, ca. 544,8 nm",
+    "TG": "DSLR/OSC Gruenkanal, ca. 544,8 nm",
+    "CV": "Clear auf V referenziert, ca. 544,8 nm",
+    "SR": "Sloan r, ca. 623,1 nm",
+    "R": "Cousins R, Rot, ca. 640,7 nm",
+    "TR": "DSLR/OSC Rotkanal, ca. 640,7 nm",
+    "SI": "Sloan i, ca. 762,5 nm",
+    "I": "Cousins I, nahes Infrarot, ca. 798,0 nm",
+    "SZ": "Sloan z, ca. 909,7 nm",
+}
+
+
+def wavelength_to_hex_color(wavelength_nm: float) -> str:
+    if wavelength_nm < 380:
+        return "#1B2A6B"
+
+    if wavelength_nm > 780:
+        return "#7A0018"
+
+    red = 0.0
+    green = 0.0
+    blue = 0.0
+
+    if wavelength_nm < 440:
+        red = -((wavelength_nm - 440) / (440 - 380))
+        blue = 1.0
+    elif wavelength_nm < 490:
+        green = (wavelength_nm - 440) / (490 - 440)
+        blue = 1.0
+    elif wavelength_nm < 510:
+        green = 1.0
+        blue = -((wavelength_nm - 510) / (510 - 490))
+    elif wavelength_nm < 580:
+        red = (wavelength_nm - 510) / (580 - 510)
+        green = 1.0
+    elif wavelength_nm < 645:
+        red = 1.0
+        green = -((wavelength_nm - 645) / (645 - 580))
+    else:
+        red = 1.0
+
+    factor = 1.0
+    if wavelength_nm < 420:
+        factor = 0.3 + 0.7 * ((wavelength_nm - 380) / (420 - 380))
+    elif wavelength_nm > 700:
+        factor = 0.3 + 0.7 * ((780 - wavelength_nm) / (780 - 700))
+
+    gamma = 0.8
+
+    def convert(channel: float) -> int:
+        if channel <= 0.0:
+            return 0
+        return round(255 * pow(channel * factor, gamma))
+
+    return "#{:02X}{:02X}{:02X}".format(convert(red), convert(green), convert(blue))
+
+
+def build_filter_metadata() -> dict[str, dict[str, object]]:
+    metadata: dict[str, dict[str, object]] = {}
+    for filter_code, wavelength_nm in FILTER_WAVELENGTHS_NM.items():
+        metadata[filter_code] = {
+            "wavelength_nm": wavelength_nm,
+            "color": wavelength_to_hex_color(wavelength_nm),
+            "description": FILTER_DESCRIPTIONS.get(filter_code, filter_code),
+        }
+    return metadata
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="Erzeugt Filter-Metadaten mit Wellenlaengen und RGB-Farben.")
+    parser.add_argument("--output", help="Pfad zur JSON-Ausgabedatei.")
+    args = parser.parse_args()
+
+    payload = build_filter_metadata()
+    json_text = json.dumps(payload, ensure_ascii=False, indent=2) + "\n"
+
+    if args.output:
+        output_path = Path(args.output)
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+        output_path.write_text(json_text, encoding="utf-8")
+    else:
+        print(json_text, end="")
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

public/tcrb_lightcurve.php

@@ -108,8 +108,9 @@ $summary = [
     'max_mag' => null,
 ];
 
-if (empty($errors) && !empty($selectedFilters)) {
+if (empty($errors) && !empty($availableFilters)) {
-    $placeholders = implode(',', array_fill(0, count($selectedFilters), '?'));
+    $queryFilters = array_column($availableFilters, 'code');
+    $placeholders = implode(',', array_fill(0, count($queryFilters), '?'));
     $stmt = $pdo->prepare("
         SELECT
             `observed_at_utc`,
@@ -123,7 +124,7 @@ if (empty($errors) && !empty($selectedFilters)) {
         WHERE `filter_code` IN ({$placeholders})
         ORDER BY `observed_at_utc` ASC, `jd` ASC
     ");
-    $stmt->execute($selectedFilters);
+    $stmt->execute($queryFilters);
     $rows = $stmt->fetchAll();
 
     foreach ($rows as $row) {
@@ -155,23 +156,33 @@ if (empty($errors) && empty($observations)) {
     $errors[] = 'Fuer die ausgewaehlten Filter wurden keine Daten gefunden.';
 }
 
-$filterPalette = [
+$filterMetadata = [];
-    'U' => '#4c6ef5',
+$filterMetadataPath = __DIR__ . '/../config/filter_colors.json';
-    'B' => '#1c7ed6',
+if (is_file($filterMetadataPath)) {
-    'V' => '#2b8a3e',
+    $filterMetadataRaw = file_get_contents($filterMetadataPath);
-    'R' => '#c92a2a',
+    $filterMetadataDecoded = is_string($filterMetadataRaw) ? json_decode($filterMetadataRaw, true) : null;
-    'I' => '#862e9c',
+    if (is_array($filterMetadataDecoded)) {
-    'CV' => '#495057',
+        $filterMetadata = $filterMetadataDecoded;
-    'TG' => '#0b7285',
+    }
-    'TB' => '#364fc7',
+}
-    'TR' => '#d9480f',
+
-];
+$filterPalette = [];
+$filterDescriptions = [];
+foreach ($filterMetadata as $filterCode => $filterConfig) {
+    if (!is_array($filterConfig)) {
+        continue;
+    }
+
+    $filterPalette[$filterCode] = (string) ($filterConfig['color'] ?? '');
+    $filterDescriptions[$filterCode] = (string) ($filterConfig['description'] ?? $filterCode);
+}
 
 $chartDatasets = [];
-foreach ($selectedFilters as $selectedFilter) {
+foreach ($availableFilters as $availableFilter) {
-    $chartDatasets[$selectedFilter] = [
+    $filterCode = $availableFilter['code'];
-        'filter' => $selectedFilter,
+    $chartDatasets[$filterCode] = [
-        'color' => $filterPalette[$selectedFilter] ?? sprintf('#%06X', crc32($selectedFilter) & 0xFFFFFF),
+        'filter' => $filterCode,
+        'color' => $filterPalette[$filterCode] ?? sprintf('#%06X', crc32($filterCode) & 0xFFFFFF),
         'points' => [],
     ];
 }
@@ -247,74 +258,10 @@ foreach ($chartDatasets as $dataset) {
     ];
 }
 
-$meanSourcePoints = [];
-foreach ($chartDatasets as $dataset) {
-    foreach ($dataset['points'] as $point) {
-        $meanSourcePoints[] = $point;
-    }
-}
-
-usort($meanSourcePoints, static function (array $a, array $b): int {
-    return strcmp((string) $a['observed_at_utc'], (string) $b['observed_at_utc']);
-});
-
-if (count($meanSourcePoints) >= 3) {
-    $windowSize = min(11, count($meanSourcePoints));
-    if ($windowSize % 2 === 0) {
-        $windowSize--;
-    }
-
-    $halfWindow = intdiv($windowSize, 2);
-    $meanX = [];
-    $meanY = [];
-    $meanCustomData = [];
-
-    foreach ($meanSourcePoints as $index => $point) {
-        $start = max(0, $index - $halfWindow);
-        $end = min(count($meanSourcePoints) - 1, $index + $halfWindow);
-        $sum = 0.0;
-        $count = 0;
-
-        for ($i = $start; $i <= $end; $i++) {
-            $sum += (float) $meanSourcePoints[$i]['magnitude'];
-            $count++;
-        }
-
-        if ($count === 0) {
-            continue;
-        }
-
-        $meanValue = $sum / $count;
-        $meanX[] = (string) $point['observed_at_utc'];
-        $meanY[] = $meanValue;
-        $meanCustomData[] = [$count];
-    }
-
-    if (!empty($meanX)) {
-        $plotlyTraces[] = [
-            'type' => 'scatter',
-            'mode' => 'lines',
-            'name' => 'Mittelkurve',
-            'x' => $meanX,
-            'y' => $meanY,
-            'line' => [
-                'color' => '#f4d35e',
-                'width' => 3,
-                'dash' => 'solid',
-                'shape' => 'spline',
-                'smoothing' => 0.7,
-            ],
-            'customdata' => $meanCustomData,
-            'hovertemplate' => 'Mittelkurve<br>'
-                . 'Magnitude %{y:.3f}<br>'
-                . 'UTC %{x}<br>'
-                . 'Fenster %{customdata[0]} Punkte<extra></extra>',
-        ];
-    }
-}
-
 $plotlyPayload = [
     'traces' => $plotlyTraces,
+    'datasets' => $chartDatasets,
+    'selectedFilters' => $selectedFilters,
     'summary' => $summary,
 ];
 ?>
@@ -342,6 +289,17 @@ $plotlyPayload = [
     gap: 0.55rem;
 }
 
+.tcrb-filter-actions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.6rem;
+    margin-bottom: 0.9rem;
+}
+
+.tcrb-filter-actions .btn {
+    flex: 1 1 auto;
+}
+
 .tcrb-filter-option {
     display: flex;
     align-items: center;
@@ -460,15 +418,20 @@ $plotlyPayload = [
 <div class="tcrb-layout">
     <div class="card">
         <h2>Filter</h2>
-        <form method="get" action="" class="form-stack">
+        <form method="get" action="" class="form-stack" id="tcrbFilterForm">
+            <div class="tcrb-filter-actions">
+                <button type="button" class="btn btn-secondary" id="tcrbSelectAll">Alle an</button>
+                <button type="button" class="btn btn-secondary" id="tcrbSelectNone">Alle aus</button>
+            </div>
             <div class="tcrb-filter-list">
                 <?php foreach ($availableFilters as $filter): ?>
                     <?php
                     $filterCode = $filter['code'];
                     $filterColor = $filterPalette[$filterCode] ?? sprintf('#%06X', crc32($filterCode) & 0xFFFFFF);
+                    $filterDescription = $filterDescriptions[$filterCode] ?? $filterCode;
                     ?>
-                    <div class="tcrb-filter-option">
+                    <div class="tcrb-filter-option" title="<?= h($filterDescription) ?>">
-                        <label>
+                        <label title="<?= h($filterDescription) ?>">
                             <input
                                 type="checkbox"
                                 name="filters[]"
@@ -482,7 +445,6 @@ $plotlyPayload = [
                     </div>
                 <?php endforeach; ?>
             </div>
-            <button type="submit" class="btn btn-primary">Diagramm aktualisieren</button>
         </form>
     </div>
 
@@ -509,7 +471,7 @@ $plotlyPayload = [
                 </div>
                 <div class="tcrb-summary-box">
                     <strong><?= h($nextPossibleEruptionUtc->format('d.m.Y')) ?></strong>
-                    <span>Naechster moeglicher Ausbruch<br>(in <?= number_format($daysUntilNextEruption, 1, ',', '.') ?> Tagen)</span>
+                    <span>Nächster möglicher Ausbruch<br>(in <?= number_format($daysUntilNextEruption, 1, ',', '.') ?> Tagen)</span>
                 </div>
             </div>
 
@@ -519,7 +481,8 @@ $plotlyPayload = [
 
             <div class="tcrb-chart-legend">
                 <?php foreach ($chartDatasets as $dataset): ?>
-                    <div class="tcrb-chart-legend-item">
+                    <?php $filterDescription = $filterDescriptions[$dataset['filter']] ?? $dataset['filter']; ?>
+                    <div class="tcrb-chart-legend-item" title="<?= h($filterDescription) ?>">
                         <span style="background: <?= h($dataset['color']) ?>"></span>
                         <?= h($dataset['filter']) ?>
                     </div>
@@ -536,11 +499,21 @@ $plotlyPayload = [
 (function () {
     const payload = <?= json_encode($plotlyPayload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES) ?>;
     const plotEl = document.getElementById('tcrbPlot');
+    const filterForm = document.getElementById('tcrbFilterForm');
+    const selectAllEl = document.getElementById('tcrbSelectAll');
+    const selectNoneEl = document.getElementById('tcrbSelectNone');
+    const filterCheckboxes = filterForm ? Array.from(filterForm.querySelectorAll('input[name="filters[]"]')) : [];
 
-    if (!plotEl || typeof Plotly === 'undefined' || !payload || !Array.isArray(payload.traces) || payload.traces.length === 0) {
+    if (!plotEl || typeof Plotly === 'undefined' || !payload || !Array.isArray(payload.datasets) || payload.datasets.length === 0) {
         return;
     }
 
+    if (filterForm) {
+        filterForm.addEventListener('submit', function (event) {
+            event.preventDefault();
+        });
+    }
+
     const layout = {
         margin: { t: 20, r: 24, b: 56, l: 72 },
         paper_bgcolor: 'rgba(0,0,0,0)',
@@ -556,7 +529,7 @@ $plotlyPayload = [
             zeroline: false
         },
         yaxis: {
-            title: { text: 'Magnitude (kleiner = heller)' },
+            title: { text: 'Magnitude' },
             autorange: 'reversed',
             gridcolor: 'rgba(255,255,255,0.12)',
             linecolor: '#f8fafc',
@@ -574,7 +547,111 @@ $plotlyPayload = [
         modeBarButtonsToRemove: ['select2d', 'lasso2d']
     };
 
-    Plotly.newPlot(plotEl, payload.traces, layout, config);
+    function buildDatasetTrace(dataset) {
+        const errorValues = [];
+        let hasErrors = false;
+
+        dataset.points.forEach(function (point) {
+            const errorValue = point.magnitude_error !== null ? Number(point.magnitude_error) : 0;
+            errorValues.push(errorValue);
+            if (errorValue > 0) {
+                hasErrors = true;
+            }
+        });
+
+        return {
+            type: 'scatter',
+            mode: 'lines+markers',
+            name: dataset.filter,
+            x: dataset.points.map(function (point) { return point.observed_at_utc; }),
+            y: dataset.points.map(function (point) { return Number(point.magnitude); }),
+            line: {
+                color: dataset.color,
+                width: 2,
+                shape: 'spline',
+                smoothing: 0.65
+            },
+            marker: {
+                color: dataset.color,
+                size: 3,
+                line: {
+                    color: '#0f172a',
+                    width: 1
+                }
+            },
+            error_y: {
+                type: 'data',
+                array: errorValues,
+                visible: hasErrors,
+                thickness: 1.1,
+                width: 3,
+                color: dataset.color
+            },
+            customdata: dataset.points.map(function (point) {
+                return [
+                    point.jd,
+                    point.observer_code !== '' ? point.observer_code : '-',
+                    point.magnitude_error !== null ? Number(point.magnitude_error).toFixed(3) : '-'
+                ];
+            }),
+            hovertemplate: 'Filter %{fullData.name}<br>'
+                + 'Magnitude %{y:.3f}<br>'
+                + 'Fehler %{customdata[2]}<br>'
+                + 'UTC %{x}<br>'
+                + 'JD %{customdata[0]}<br>'
+                + 'Observer %{customdata[1]}<extra></extra>'
+        };
+    }
+
+    function getActiveFilterCodes() {
+        return filterCheckboxes
+            .filter(function (checkbox) { return checkbox.checked; })
+            .map(function (checkbox) { return checkbox.value; });
+    }
+
+    function renderPlot() {
+        const activeFilterCodes = getActiveFilterCodes();
+        const activeDatasets = payload.datasets.filter(function (dataset) {
+            return activeFilterCodes.includes(dataset.filter);
+        });
+        const traces = activeDatasets.map(buildDatasetTrace);
+
+        if (traces.length === 0) {
+            Plotly.react(plotEl, [], layout, config);
+            return;
+        }
+
+        Plotly.react(plotEl, traces, layout, config);
+    }
+
+    const initiallySelected = Array.isArray(payload.selectedFilters) && payload.selectedFilters.length > 0
+        ? payload.selectedFilters
+        : ['V'];
+
+    filterCheckboxes.forEach(function (checkbox) {
+        checkbox.checked = initiallySelected.includes(checkbox.value);
+        checkbox.addEventListener('change', renderPlot);
+    });
+
+    if (selectAllEl) {
+        selectAllEl.addEventListener('click', function () {
+            filterCheckboxes.forEach(function (checkbox) {
+                checkbox.checked = true;
+            });
+            renderPlot();
+        });
+    }
+
+    if (selectNoneEl) {
+        selectNoneEl.addEventListener('click', function () {
+            filterCheckboxes.forEach(function (checkbox) {
+                checkbox.checked = false;
+            });
+            renderPlot();
+        });
+    }
+
+    renderPlot();
 })();
 </script>
 <?php endif; ?>

scripts/telegram/telegram_cron.php

@@ -23,6 +23,7 @@ $stateFile = __DIR__ . DIRECTORY_SEPARATOR . 'telegram_cron_state.json';
 $dbConfig = require $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'database.php';
 $telegramConfig = require $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'telegram.php';
 require_once $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'telegram_message_footer.php';
+$filterColorConfigPath = $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'filter_colors.json';
 
 $dsn = sprintf(
     'mysql:host=%s;port=%d;dbname=%s;charset=%s',
@@ -547,6 +548,12 @@ function formatGermanDateTime(?string $value): string
 
 function buildTcrbVChartSvg(array $observations, array $latestObservation): string
 {
+    $filterColors = loadFilterColors();
+    $vColor = (string) ($filterColors['V'] ?? '#92FF00');
+    $vStrokeColor = darkenHexColor($vColor, 0.35);
+    $vHighlightColor = lightenHexColor($vColor, 0.35);
+    $vHighlightStrokeColor = lightenHexColor($vColor, 0.6);
+
     $width = 1200;
     $height = 700;
     $paddingLeft = 90;
@@ -639,14 +646,15 @@ function buildTcrbVChartSvg(array $observations, array $latestObservation): stri
             $yTop = $scaleY($magnitude - $error);
             $yBottom = $scaleY($magnitude + $error);
             $errorBars[] = sprintf(
-                '<line x1="%1$.2f" y1="%2$.2f" x2="%1$.2f" y2="%3$.2f" stroke="#8fd694" stroke-width="2" opacity="0.9" />' .
+                '<line x1="%1$.2f" y1="%2$.2f" x2="%1$.2f" y2="%3$.2f" stroke="%6$s" stroke-width="2" opacity="0.9" />' .
-                '<line x1="%4$.2f" y1="%2$.2f" x2="%5$.2f" y2="%2$.2f" stroke="#8fd694" stroke-width="2" opacity="0.9" />' .
+                '<line x1="%4$.2f" y1="%2$.2f" x2="%5$.2f" y2="%2$.2f" stroke="%6$s" stroke-width="2" opacity="0.9" />' .
-                '<line x1="%4$.2f" y1="%3$.2f" x2="%5$.2f" y2="%3$.2f" stroke="#8fd694" stroke-width="2" opacity="0.9" />',
+                '<line x1="%4$.2f" y1="%3$.2f" x2="%5$.2f" y2="%3$.2f" stroke="%6$s" stroke-width="2" opacity="0.9" />',
                 $x,
                 $yTop,
                 $yBottom,
                 $x - 7,
-                $x + 7
+                $x + 7,
+                htmlspecialchars($vHighlightColor, ENT_QUOTES, 'UTF-8')
             );
         }
 
@@ -658,8 +666,8 @@ function buildTcrbVChartSvg(array $observations, array $latestObservation): stri
             $x,
             $y,
             $isLatest ? 7.0 : 4.2,
-            $isLatest ? '#f4d35e' : '#7bd389',
+            $isLatest ? $vHighlightColor : $vColor,
-            $isLatest ? '#fff3bf' : '#d9f99d',
+            $isLatest ? $vHighlightStrokeColor : $vHighlightColor,
             $isLatest ? 2.6 : 1.4
         );
     }
@@ -691,13 +699,13 @@ function buildTcrbVChartSvg(array $observations, array $latestObservation): stri
   <text x="%d" y="70" fill="#cbd5e1" font-size="19">letzte 2 Monate</text>
   <text x="%d" y="%d" fill="#cbd5e1" font-size="18">%s</text>
   <text x="%d" y="%d" fill="#cbd5e1" font-size="18" text-anchor="end">%s</text>
-  <text x="%d" y="48" fill="#f4d35e" font-size="22" text-anchor="end">Aktuell: %s%s</text>
+  <text x="%d" y="48" fill="%s" font-size="22" text-anchor="end">Aktuell: %s%s</text>
   <text x="%d" y="74" fill="#cbd5e1" font-size="18" text-anchor="end">%s UTC</text>
   %s
   <line x1="%d" y1="%d" x2="%d" y2="%d" stroke="#88a4bf" stroke-width="1.6"/>
   <line x1="%d" y1="%d" x2="%d" y2="%d" stroke="#88a4bf" stroke-width="1.6"/>
   %s
-  <path d="%s" fill="none" stroke="#7bd389" stroke-width="3" stroke-linejoin="round" stroke-linecap="round"/>
+  <path d="%s" fill="none" stroke="%s" stroke-width="3" stroke-linejoin="round" stroke-linecap="round"/>
   %s
 </svg>
 SVG,
@@ -720,6 +728,7 @@ SVG,
         $height - 28,
         htmlspecialchars($lastLabel, ENT_QUOTES, 'UTF-8'),
         $width - $paddingRight,
+        htmlspecialchars($vHighlightColor, ENT_QUOTES, 'UTF-8'),
         htmlspecialchars($latestMagnitude, ENT_QUOTES, 'UTF-8'),
         htmlspecialchars($latestError, ENT_QUOTES, 'UTF-8'),
         $width - $paddingRight,
@@ -735,10 +744,75 @@ SVG,
         $plotBottomY,
         $errorBarsSvg,
         $pathSvg,
+        htmlspecialchars($vStrokeColor, ENT_QUOTES, 'UTF-8'),
         $pointsSvgMarkup
     );
 }
 
+function loadFilterColors(): array
+{
+    static $colors = null;
+    global $filterColorConfigPath;
+
+    if (is_array($colors)) {
+        return $colors;
+    }
+
+    $colors = [];
+    if (!is_string($filterColorConfigPath) || !is_file($filterColorConfigPath)) {
+        return $colors;
+    }
+
+    $raw = file_get_contents($filterColorConfigPath);
+    $decoded = is_string($raw) ? json_decode($raw, true) : null;
+    if (!is_array($decoded)) {
+        return $colors;
+    }
+
+    foreach ($decoded as $filterCode => $config) {
+        if (is_array($config) && !empty($config['color'])) {
+            $colors[(string) $filterCode] = (string) $config['color'];
+        }
+    }
+
+    return $colors;
+}
+
+function darkenHexColor(string $hexColor, float $amount): string
+{
+    return adjustHexColor($hexColor, -abs($amount));
+}
+
+function lightenHexColor(string $hexColor, float $amount): string
+{
+    return adjustHexColor($hexColor, abs($amount));
+}
+
+function adjustHexColor(string $hexColor, float $amount): string
+{
+    $hex = ltrim(trim($hexColor), '#');
+    if (!preg_match('/^[0-9a-fA-F]{6}$/', $hex)) {
+        return '#92FF00';
+    }
+
+    $channels = [
+        hexdec(substr($hex, 0, 2)),
+        hexdec(substr($hex, 2, 2)),
+        hexdec(substr($hex, 4, 2)),
+    ];
+
+    foreach ($channels as $index => $value) {
+        if ($amount >= 0) {
+            $channels[$index] = (int) round($value + ((255 - $value) * $amount));
+        } else {
+            $channels[$index] = (int) round($value * (1 + $amount));
+        }
+        $channels[$index] = max(0, min(255, $channels[$index]));
+    }
+
+    return sprintf('#%02X%02X%02X', $channels[0], $channels[1], $channels[2]);
+}
+
 function buildTcrbObservationSignature(array $observation): string
 {
     return implode('|', [