You have 4 wires. RGB and power.
As per GGG
Wiring the NOVA-TB™ RGB lighting module:
There are 4 wires connected to the lighting module. Each are labeled with their function. If you own an LED-Wiz™, the color control lines would be connected to 3 outputs of your choosing. Otherwise, to hard wire a specific color, just attach the desired colors control line to ground and connect the power line to a regulated +5VDC source. This can be done in any combination you desire to achieve one of 7 colors, or small resistors or potentiometers can be added in series to create any color desired. For full color and dynamic control, use 3 outputs on an LED-Wiz™.
In your case 3 outputs of the Pac LED 64 should be used.