Yeah I like how it came out too. As for painting, that isn't something that I do very often so I wouldn't really know what I would want to use -- being keycaps and contacting fingers for extended periods I would prefer to use the least toxic substances possible, obviously.
I do have some concentrated paints that could probably stain the sidewalls certain colors, might try that (but since I can get any color with the leds I don't really need to paint -- I could try the tops of the keycaps or even remove all the keycap coating and paint the letters on for a different look. Most of which is too much for me at this time.) I'm really interested in the cases that people are making; I like the idea of wood and metal, like copper. Copper keycaps with copper plate and case? Silver keycaps, even, haha. It would be interesting to see what could be done with metal and backlighting, would it be possible to create a keycap thin enough that the lighting would shine through or is there some other way around it? Perhaps just the top of the key is metal and the side walls are transparent or something. Lots of ideas, none of which I could afford...hah.
EDIT: Got around to testing a sand paper bit for a slower dremel and it worked a lot better, here are some pics:
1st: The assortment of tools available (not including the case on the right) The dremel on the top is the one I used first, with what seems to be a rock grinding bit.
2nd: This is the Dremel I switched to, which features modes that the other does not. I instead opted for a sandpaper bit and low speed, you can see the results in the third image. That little rock below the dremel is a finishing rock, or at least that is what I am using it for after sanding.
3rd: I just did the Ctrl key which was much easier, faster, and better looking than the other bit. I also cleaned up the D key so you could tell the difference between the dremels and bits results (WSA = old dremel/bit | D Ctrl = New dremel/bit). Plan to do the rest of the keys this way.
4th: The keyboard I am using the keys from, I love seeing those naked brown switches, woo! :3