Slate (cool/blue-tinted) clashed with the Flexoki warm tones used across the Singi Labs design system. Sand (warm neutral) aligns with the brand palette (#1C1B1A dark bg, #FFFCF0 light fg). - Replace slate.css/slate-dark.css imports with sand equivalents - Remap all --color-slate-* tokens to --color-sand-* - Update semantic mappings and dark mode overrides - Update hardcoded primary-foreground from #1c2024 to #21201c (sand-12)