Then you should have said "i want an LED that can turn blue" not "I want a multi-color LED."
By the way, the actual LED emitters are blue. The light only looks because of the phosphorescent material in the package above the emitters. The yellow phosphors actually produce white, not yellow, light when they absorb the blue LED light.
why are you just picking an argument. i know what the other guy was trying to say. yes multi means more than one, however; CONTEXT is also part of our language. so in CONTEXT to what he was saying, multi means red, blue, purple, orange, the entire color wheel and all the shades in between.
but i understand, you MUST really want that post count up!