This RGB (Red, Green, Blue) backlight can change color based on which connections are grounded. Mix your ground connections to make a variety of colors! Check out the pictures to get an idea of how to mix colors to get the desired effect. 

Colors created:

• Red
• Green
• Blue
• Teal (Green + Blue)
• Yellow/Green (Green + Red)
• Purple (Red + Blue)
• Ice Blue White (Red + Blue + Green)

Make sure to use the correct resistors for each color (assuming a 4.5-5V source in a DMG):

• Green = 100ohm resistor
• Blue  = 100ohm resistor
• Red  = 150ohm resistor

Ground the left most ground to get a green color

Ground the middle to get blue

Right side is red

Mix Green and Blue to get light blue or teal

Red + Blue = Purple

Green + Red = Yellow

Ground all 3 to get a special white