Usually use incandescent PAR 30s with "blue" bulbs in the clip on fixtures with metal "shades". Saw the blue CFLs, so I was thinking about using them. That way I wouldn't have to worry about them running all night when the stage manager leaves them on after a show. The amount of heat generated would be much less. We have three switched receptacles in the backstage and side stage area. They also have PAR CFL bulbs in colors. I've looked through the other postings on back stage lights and I've seen that many use other fixtures and gel them. What can I say - I'm cheap, lazy and I don't trust volunteer stage managers. So absent a compelling reason, I'll probably stick with what I've been using.