Perhaps now that the interface has gone through all of the "primary" colors of computers, it will now start moving on to the "secondary" colors of computers. Therefor, G4 will probably have a ummmm....teal interface, as green+blue=teal (I hope)
Or maybe im just nuts.
I havn't personally tried this, but in theory it might work.
You can cast unlock to loosen spore switches, I have done that before, so theoretically it could also be done to these crystals.