OK, while I was cleaning off my blue Sharpie on the LED I did some tests to see what all is happening with the LEDs when this program is operating. As suspected, the program alternates the LEDs to get the various colors.

In disabled mode the main white LED, or default if you will, is the one that lights up.

Pics self explanatory. I did not do all the colors since one gets the idea with the below pics.

By the way, I took some of those pics before I cleaned off the blue Sharpie, that is why the lower right LED still has a blue tint to it.