Killer,

From their website:

This is a Six-Color Changing Inverter with a digital Touch Pad. It is an upgrade from the standard Two-Color Inverter which we normally supply. It will let you choose between several shades of Blue and Green, copared to the Two-Color Inveter which limits you to one shade of Either of the colors. The Digital touch-pad also has a built in Dimming control which enables you to set the level of brightness.