now i want an RGB system, How do they work?
If you look very carefully at the pics in the first post, there's one of the LED in the emitter.
You can even see the three different "dies" that make up the LED: red (R), green (G), and blue (B).
The different colors are made when combinations of the LED dies are lit at the same time.
I labeled these in the first post as well (see Blade section). ;)