You can do this with the property node. The color is a six-digit number that defines the RG and B channel values, both for the ON state and the OFF state. This is great if you want to programmatically change the color of the control. Otherwise you can just use the "dropper" function of the color tool pallete to reproduce the background color. Again, be sure to select the ON or OFF function first, before applying the color.
Good luck!
Eric
Eric P. Nichols
P.O. Box 56235
North Pole, AK 99705