XOSC ships with five themes:
- Midnight — the default. Indigo / cyan accent on near-black.
- Obsidian — deep blacks, emerald accent.
- Vapor — purple-pink retrowave.
- Sunlit — clean light, violet accent.
- Paper — warm light, sky-blue accent.
Gloss
The Gloss intensity slider scales every highlight, inner shadow, and glow on every glossy surface. At 0 the UI looks matte and modern; at 1.5 it's positively wet. Adjust to taste.
Custom palettes
Shipping a full custom theme editor is on the roadmap. Today, you can edit %APPDATA%/XOSC/xosc.config.json and put a customTheme object under settings, with the same shape as the built-in themes (vars mapping CSS custom properties to colour strings). XOSC will use the custom theme when one is set; clear it to fall back to the built-in chosen by themeId.