I have been playing with Bittle now that I got him working and I really want to give him LED eyes of some sort. I have some 5 mm LEDs in red, yellow, and blue from an ATMega kit and was wondering if something like that would be the right specs for them. I do have some extra wires from the kit too so I could wire it through the head and onto the board. I just want to make sure that it would be safe to add such lights made to be used with arduino kits before I go ahead and do it. I have the resistors that came with the same kit too but not sure which ones I would use.