The beam from my Veleno Designs E-Series LED drop-in my Surefire E2E had a green tint. I replaced it with a neutral tint Cree XP-G LED and the beam still had a green tint. Some people commented that the green tint was caused by the stock Surefire reflector.
Instead of buying a new E2E head, I removed the factory reflective coating on the head with solvent and tried using “chrome” paint to re-coat it. The Krylon Metallics Bright Silver (1401) paint was not reflective enough to be used as a flashlight reflector. With the E2E reflector six feet away from a white wall, the bulb just threw a giant white circle with no hot spot.
Next I tried Mona Lisa Silver Leaf. The leaf material comes in booklets of 25 (5.5″ x 5.5″) sheets. I used Gold Leaf Adhesive Size on the E2E head before applying the leaf. The size is a water-based adhesive that dries to a light tack before the leaf is applied.
The silver leaf is so thin that picking up part of a sheet will tear it. I just tried to get a large enough piece to cover the reflector then I burnished it lightly. There were some creases in the leaf, but since I wasn’t trying to get an absolutely mirror finish, the imperfections weren’t a problem. The reflector with the silver leaf has a nice hotspot. I’m not sure how the size (adhesive) will hold up to the heat.