Rainbow Ripley

I'm letting Ripley's inner light shine through here. I feel like I've hit peak 70's locally-produced-tv-show with this image.

The original for comparison:

And in case you want to play along at home, here are my GIMP layers:

There's an unnecessary layer at the bottom but when I started messing with the middle layer I wasn't sure if I would need it or not.

I'm feeling a bit more comfortable with creating layer masks from images now. This could be dangerous...