Frog Stompswitch PCB – True Bypass, fits on standard stompswitch and can be used for any guitar pedal stompswitch project. This includes two bi-color LED connections. WHY? Ok, Here is what I use two connections for. One I use for a indicator through the top of the guitar pedal enclosure. The other, I use to point a LED down toward a light-plate to make it glow. The light-plate goes between the top and bottom pieces of the enclosure and can be found at Small Bear Electronics (http://smallbear-electronics.mybigcommerce.com/). They are a very cool addition.
By the way, you can use single or bi-color LEDS, just use the right contacts.
Documentation is not complete but will be available soon in the product documentation page.