- Set data-theme attribute on body for CSS dark mode detection - Add white border (30% opacity) to spool icons in dark mode - Add --swatch-border-color CSS variable for consistent theming - Dark/black filament colors now visible against dark backgrounds Fixes upstream issue: https://github.com/Donkie/Spoolman/issues/597 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>