I’ve set up a thing where you can control the crossfading RGB ping pong ball via Ustream chat. Simply type “!rgb # # #” where # is an integer from 0 to 255 (for example, “!rgb 0 255 0” is green), and the LED will fade to that color. I’ll try to leave the stream up tonight so if you see this before I wake up tomorrow, hopefully it’ll still be there. It’s just a combination of the python IRC bot script and the RGB LED crossfading Arduino sketch from before. Ustream chat is basically just an IRC channel, so that’s why it works!
Update: Stream has ended! Thanks to everyone who participated!