As far as I know, just orange and green, maybe red? Theoretically someone could get it to flash green + orange which equals brown hah.

 

I've only seen Green (fully charged, notifications), Orange/Amber (Charging) and Red (low battery)

 

I want it to be a disco light

 

That's all I've seen. I've never seen yellow.

I'd say the Evo's LED is limited. None of the multicolor LED apps work for the Evo.

 

Yep, definetly Orange and Green for charging. When the battery is low, and the led flashes, I cant tell if it flashes orange or red. It looks red, so I would say it can only do 3 colors.

 

I miss the days of the Multicolored HTC Mogul LED!