I've looked all over our little town for light bulbs like Rodney has in his pics. All I've been able to find so far are similarly-SHAPED bulbs, but none in colors other than white.

Has anyone else seen them around? I'd like to use the same (or similar) color for the bulb as I do for the acrylic diffusers. For now, we'll be doing red, blue, and green.

I have tried 7W and 13W bulbs so far, and I think the lower wattage bulbs look best. We're even considering using 4W night-light bulbs in another set. When we get our "druthers" settled, I'll post a pic.

You can actually spray paint the bulbs to get a colour - we did it for this illuminated sign , we needed to use a circular flourescent and getting one in blue is impossible , so we spray painted it. Worked wonderfully (in this case we used an opal front panel to act as a diffusor as we did not take a lot of care spraying the bulb and it was rather mottled , but if you use a few light coats yu do get an even paint coverage )
We made this thing on our lasers too , even the back casing etc , I will post the way we did this (you need a wire bender).
Was a very lucrative job as the run was for 500 and we did a far better job on it than most of the "pro" lighting guys did at a cheaper price.