Now that I like! I can see doing the light in various colors with the torch to get a cool camo effect going. 
I think someone with an oxy-acetylene could do it camo style, with a bucket of water to quench. When the metal gets hot enough, discoloration starts to spread rapidly, but with a really hot torch, you could hit a spot and quench, hit a spot and quench. I'd love to see the possibilities! Quenching would stop the spread of the discoloration, but I don't know the adverse affects of the aluminum. Will it get brittle with all of this?
Where's the metallurgist?
This is a cheap Tmart 501. I suspected that these cheap 501s were painted. Guess not.
Ok, I figured I would go for broke. It's a $4 light. I heated the head and tail cap. When I did the tail cap I heated right on the center post where the lanyard fit. It turned a bright color fast, then the rest of the cap started to turn and I took the heat off. It kept the color a little darker than the body.
Then I did the head and I started heating up on the bezel and when that turned I heated all round the bezel and stopped and sat it in the outdoors where the cool wind was blowing. It also stayed a darker color.
So..... Someone with an oxy-acetylene torch and a bucket of water needs to go sacrifice one of their lights.
Gives a new meaning to the word torch.
My only grief it is that it turns orange. Why it didn't go in gun grey instead. :/ Would have loved that and "sacrificed" a few 504B hosts to do it.
Who is going to try what happens baking a blue or red anod? maybe other colors!
I am giving a try on the oven with a 502D I already de-anodized the head, lets see the result...
Probably different shades of orange. I suspect it's a chemical thing when anodization overheats and produces some side effect in the orange specter. However no1 knows how it would affect the anodization after cooked properly. Will it be less durable? I'm tempted to try a fake solarforce L2 which is shiny and i suspect it being painted rather than anodized. If it is painted it's really well made as it does not damage easily, at least equally good to the classic type 2 anodizing.
Will probably not try as i hate orange color with passion. (Why must it be orange anyway?!? Any other color would be nicer to me even yellow... blah!)
i just did my L2 host and it turned out dark orange/copper, i used a torch so i can fade mine and its orange/copper on both ends and medium dark in the middle :) very awesome looking only if i had a good camera :(
it isn't orange
yeah, a little darker tailcap, next time I will screw the body together, and the color changing will be equal. Very likeable color.
I have my Super-Bright 7-2 in the toaster oven right now and it's getting a nice deep brown sheen!
Just tried my kd c8, bezel went easy but the body won't budge even a little?
I've left it under the grill for ages, and tried a a small butane torch on it for quite some time....any ideas?
Maybe the body is HA3. Only type II ano is supposed to change color when heated.
that's the way mine went and i though i screwed up, but i kept my torch in the same spot till u see it turning orange took about 2-4min
like he said it might be HA3 ?
TF D1 titanium turned silver. I tried a torch and if I could get it to turn a little gold'ish but when it cooled it went back to silver. Oh well, I like it better than the titanium...
Any camera will do. ;)
Anyone tried the silver anodized L2 clones or other host? I wonder what color it would turn to.
Ano type does seem to make a difference. I know these cheap lights I have would probably not have type III ano. Maybe only type II works, but most likely it will be just a little different color. As fas as things not turning with a torch, the thicker the wall, the longer it takes and that little torch I have gets very hot. Smaller butane torches may not even phase it. The more heat I used and the longer I did it, the brighter the color was. That's why the thin barrel is lighter. It got hotter and turned a lighter color. The head and tail cap are very thick and it look a long time, and I don't think I could have gotten it hot enough to turn light, since it's a large thick part. I think a hotter torch is needed on the thick lights. First it got dark orange, then lighter orange, then gold and on the tip of the tailcap (small post there), it turned yellow.
I haven't tried the oven yet and I'm leery to do so. I don't want to expose my wife to that, so I think I will stick with a torch and maybe I will try a hotter torch like mapp gas. Have to look in the big box stores.
It will be interesting to see what colors do.
Couldn't get my ultraOK to change in the oven, even on full (250c). Used a hot air gun (paint stripper) and it worked pretty quick, had to hold it VERY close tho.