Just a heads up to future buyers of Surefire's colour filters - If you're going to get one...just be aware the heat from the incan lamp may warp the plastic colour filter. I'm guessing if left on enough, it may even melt/bubble the plastic. Don't know if the P60 lamp creates enough heat...but the P61 probably would.
Last night i let my little cousin play with my SF G2 with G90 HP lamp installed (a rechargeable setup) and after 5+ minutes...the filter (red one) had warped a little bit. I only noticed today...anyways, i've got the F2X series, not the F3X series fwiw.