So I'm doing this benefit gig, and I'm going to have access to 6 of those "single-cell" T-3 worklight fixtures. Luckily, they're black, not blazing bright yellow or orange or red paint. I'll be lamping them down to 250W so that I can fit everything on my alotted circuits. I'm planning to use two for frontlight, two basically in line with the downstage monitor line for some interesting shadow effects on the back wall and uplighting, and then two on the drum riser to shoot through the band. Has anyone ever used these with gel, and if so, how fast is it toasted through? Would it be worth while to make some improvised color extenders out of metal flashing if I'm gonna use 'em with something like R19 or R65?