Completed the upstairs window frame conversion. I have removed all the RGB lights from the frames. They were held on by zipties for 2 years. In that time the ties became britle thanks to the sun and cold temps. Used a drill press (borrowed from my sister), a drill press vice, 1/2 inch countersink drill bit, and some Krylon Fusion paint to refurbish the look of the frames.
The RGB nodes push thru the back of the frame and show thru the front. You do not see any wires at all. Very clean look.
I had to create a jig which would make even 4 inch spacing (distance between each RGB light). This was a bit challenging but I managed to make the jig you see below. Coming soon, how-to instructions.