Doing that would probably cause it to stay dim for a time... I have an Alpec Team greenie, which is a Leadlight, and I noticed right away that it seemed to have "moods", sometimes bright, sometimes dim.... it fooled me into replacing the batteries early a few times until I realized it was always bright when fresh out of my pocket and operating at near body temps. So it is definitely heat sensitive.
(so now let's see who preheats their greenie in search of even more extra milliwatts! /ubbthreads/images/graemlins/popcorn.gif )