Devo 6 / 8 Color Buttons for Flight Modes

I'm working with various flight modes in my APM Quad, so here are some toggles I added. Of course we still can't use them quite the way I'd like (e.g. toggles by flight mode rather than by switch) but they're here if you need them!

What's the license on this? In particular, would there be a problem adding them to the GPL'ed deviation build?

I used the current button backgrounds and removed the foreground labels, then put on my own labels. So I believe my changes are sufficient for me to put them into the public domain, or GPL if we like.