via http://emu-russia.net/en/

Nintendo GameBoy/GameBoy Color emulator for Android has been updated. Changes:
- Switched to the Material Design theme.
- Added "up" buttons to all title bars.
- Revised all menus, making them work uniformly.
- Fixed black banding in the Palette Editor.
- Fixed text color in the Gallery.
- Updated all icons to the newest Lollipop versions.
- Retired some icons, replacing them with better fitting ones.
- Removed application name from all title bars, to save space.
- Now defaulting to the "light UI" mode.
News source: https://play.google.com