diff --git a/server/src/wled_controller/static/js/features/color-strips-test.ts b/server/src/wled_controller/static/js/features/color-strips-test.ts
index 5d71fa0..29c0633 100644
--- a/server/src/wled_controller/static/js/features/color-strips-test.ts
+++ b/server/src/wled_controller/static/js/features/color-strips-test.ts
@@ -38,9 +38,8 @@ function _collectPreviewConfig() {
         if (colors.length < 2) return null;
         config = { source_type: 'color_cycle', colors };
     } else if (sourceType === 'effect') {
-        config = { source_type: 'effect', effect_type: (document.getElementById('css-editor-effect-type') as HTMLInputElement).value, palette: (document.getElementById('css-editor-effect-palette') as HTMLInputElement).value, intensity: parseFloat((document.getElementById('css-editor-effect-intensity') as HTMLInputElement).value), scale: parseFloat((document.getElementById('css-editor-effect-scale') as HTMLInputElement).value), mirror: (document.getElementById('css-editor-effect-mirror') as HTMLInputElement).checked };
+        config = { source_type: 'effect', effect_type: (document.getElementById('css-editor-effect-type') as HTMLInputElement).value, gradient_id: (document.getElementById('css-editor-effect-palette') as HTMLInputElement).value, intensity: parseFloat((document.getElementById('css-editor-effect-intensity') as HTMLInputElement).value), scale: parseFloat((document.getElementById('css-editor-effect-scale') as HTMLInputElement).value), mirror: (document.getElementById('css-editor-effect-mirror') as HTMLInputElement).checked };
         if (['meteor', 'comet', 'bouncing_ball'].includes(config.effect_type)) { const hex = (document.getElementById('css-editor-effect-color') as HTMLInputElement).value; config.color = [parseInt(hex.slice(1, 3), 16), parseInt(hex.slice(3, 5), 16), parseInt(hex.slice(5, 7), 16)]; }
-        if (config.palette === 'custom') { const cpText = (document.getElementById('css-editor-effect-custom-palette') as HTMLTextAreaElement)?.value?.trim(); if (cpText) { try { config.custom_palette = JSON.parse(cpText); } catch {} } }
     } else if (sourceType === 'daylight') {
         config = { source_type: 'daylight', speed: parseFloat((document.getElementById('css-editor-daylight-speed') as HTMLInputElement).value), use_real_time: (document.getElementById('css-editor-daylight-real-time') as HTMLInputElement).checked, latitude: parseFloat((document.getElementById('css-editor-daylight-latitude') as HTMLInputElement).value), longitude: parseFloat((document.getElementById('css-editor-daylight-longitude') as HTMLInputElement).value) };
     } else if (sourceType === 'candlelight') {