Hi!

I was searching for ceiling clip-on shades and ran into your post. (I'm tring to put a shade on a comnpact fluorescent near the ceiling.) Since you say you can use a shade that would work for a candelabra bulb, there seem to be lots of choices.

I searched on omething like
ceiling bulb clip-on shade

The web sites I've come across that I found the most relevant/useful were:

http://www.nextag.com/shades-to-clip-on-light-bulb/products-html

http://www.lampsplus.com/Products/lamp-shades/style_transitional/Fitter_Clip-On-@-Chandelier/ (this contains shades from the first web site, which is one of those that gathers info from various web pages)

Good luck!