one more: the power of the led stands in relation to its color due the color's wavelength. the highest power blue 5 mm led i was able to get (for my mouse ;D) was 2700mcd. the original red ones have bout 5000-7000 mcd but ya can get yellow ones with ~9500 mcd and red ones with up to 8000mcd. green ones have around 5500 to 6000 mcd and white ones up to 5000 mcd ( according to the leds available at the biggest european electronics distributor www.conrad.com )
i found my thread bout mouse moddin' :

http://www.netsmog.com/cgi-bin/yabb/...ction=display&
num=1009570180&start=0