Theme grid All nine built-in presets. Midnight Navy is active. Settings AppearanceSettingsTab.tsx Midnight Navy Cool slate, silver accents, restrained depth Maroon & Gold Deep burgundy luxury with warm gold highlights Obsidian Near-black carbon with muted steel accents Blood Ember Charcoal forge with molten crimson heat Toxic Void Pitch black with radioactive acid green Arctic Blade Frozen navy steel with ice-edge cyan Copper Wraith Industrial soot with oxidized copper bite Neon Noir Crime-alley black with hot pink / cyan neon Porcelain Light Clean daylight workspace with navy accents .theme-grid + .theme-card.active. Labels match THEME_PRESETS in themes.ts.