Im thinking you mean resistor
Well the average is
Red = 2v = 150ohm
Green = 3v 100ohm
Blue = 3v 100ohm
(For the 5v point)
Also only run them at their normal voltage, not their max, as they overheat and lose life very quickly
For example, a blue led at 3v wouldnt get that warm, and would be very bright, and last 10,000 hours or more
the same led at 3.6v would get very hot (Mine gets hot enough to desolder itself), would be a tiny bit brighter and only last about 100 hours or slightly more