Not much is known yet about this keyboard from Optimus that has color OLED displays in the keys.
3 Button Optimus mini OLED Keyboard available for pre-order
The Optimus OLED keyboard allows to display any symbol or icon on the keys. Hotkeys could bear the icon of the application and that in color - it looks great. No word on when this innovative keyboard will be available.
Gearlive has a couple hi-res photos of the OLED Optimus keyboard.
The Sansun LED keyboard with GSM sensor is lighting up too.