Very nice.
I personally do not do such mods.
At latest builds I want as much light around hotspot as possible. I even have mirror foil on order. I plan to put it around emitter so maybe it will pump more lumen out in hotspot and flood mode?
Yes that does not look nice on white wall but In nature you get something like "useful spill" :)
Edit: I got green B158 today and first expressions are more than good. Must find some time to modd it.
Edit: I just did mod it with xpg2, djozz fet, bypassed springs, pre collimator lenses. Great lenses. I am to tired to fully charge battery currently but for now it has 240 kcd with LG HG2 (brown) at 3.8V :) Yes that is really insane. It has bit smaller die projection than 1503, and bit better flood mode(not much only 10%), as Djozz mentioned.
Fast photo 3m from blueish wall (looks even clearer than that):
I think it is very dangerous to color emitter with paint cause if even tiny particle comes to dedomed led, it will suck it in and create burning crater inside emitter. I had 2 cases when something fell onto emitter(junk or metal particles) and burned it. Emitter creates a lot of heat and paint will eventually crumble into tiny particles.
22.12 edit: with fully charged LG HG2 330kcd :)
Uniquefire if you read this thread(and I know you guys following this) get plastic lenses for 15.. series of flashlights cause your glass one sucks!