RGB LED

From the shop's description

Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins - Cathode is the longest pin. One for each color and a common cathode. Use this one LED for three status indicators or pulse width modulate all three and get mixed colors! Features Forward Voltage (RGB): (2.0, 3.2, 3.2)V Luminosity (RGB): (800, 4000, 900)mcd