With these RGB LEDs you can get your three main colors and anything in-between with just one LED!
These LEDs come in Common Anode or Common Cathode circuits. Make sure you get the right one for your application or schematic.
Common Anode: The positive lead. Hook up the longest lead to power and apply ground to one or more of the remaining leads.
Common Cathode: The negative lead. Hook up the longest lead to ground and apply power to one or more of the remaining leads.