I'm trying to figure out what the best way is to control an RGB LED.  
Some questions I have:

1) Do I need to light all 3 colors at once, or can I just light 1 at a 
time and use POV to get the desired color?
2) Should I use a microcontroller or an LED Driver?
2a) If you suggest an LED Driver, is there a sample project somewhere 
that I could try?
3) Anyone have any POV timings to get specfic colors?  not sure how to 
state this.. probably dependant on the RGB LED so I'll probably have to 
figure this out on my own?  maybe a better question is, any suggestions 
on how to figure out timings needed to generate specific colors?

I'm trying to make a simple project, to begin with, which is a cardboard 
cube lined with tinfoil and with some RGB LED's.  I covered the open 
side of the cube with white paper.  I'd like to be able to pick any 
color and even be able to transition from one color to another by 
choosing colors in between.  All of this I'll eventually control with a 
serial connection just to keep it simple.

Thanks,
Shay
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