I too think it would be nice to be able to use different color LED's.
I'm having a tough time breaking down the design to figure what resistor I would need to use if I used different LED's. I think I figured out the green ones, they appear to be powered from the 1117v33c 3.3v voltage regulator and use 2.2 volts, draw 20mA and two are on in a parallel circuit, so the exact calculation would be 27.5ohms, rounded up to the nearest gives the 33ohm resistor.
I'm confused on the red LED's, as if they were powered with 3.3 volts, and only one is powered would mean that a 82ohm resistor would be used. For there to be a 10ohm resistor, the supply voltage would be around 2 volts or theres another resistor that I am missing.
Does anyone know if I'm correct on my analysis of the green LED's and can help me figure out the red ones?
Thanks,
Curt