Android 15.2 beta adds modular theming and Material You 4 design tokens

Design · 3 min read

Material You 4 introduces an expanded token system that separates semantic roles (like "cta-background") from raw values, enabling apps to map brand palettes onto system tokens programmatically. Developers can define token transforms to maintain accessible contrast ratios across dynamic palettes.

Android 15.2’s modular theming API focuses on per-module theming: app bundles can now register theme modules that the system synthesizes into a unified UI at install or runtime. This makes it easier for large apps with multiple feature teams to ship consistent styles without heavy refactors.

Designers get improved tooling in Android Studio to preview token inheritance across breakpoints and states. Google also provided migration guides and Figma kits aligned to the new tokens to help teams sync design systems and runtime behavior.