Just got done tinting my tails. I went with the VHT Nightshades.
I didnt sand them first, just cleaned them up really well before painting.
I did about 5 coats of VHT i think. It feels like i may have used a little more than half a can on all three lights. I've heard of people going with a full can or even two cans, but i'm happy with the level of darkness.
About an hour after the last coat of VHT I laid down 4 good coats of a gloss clear coat a few minutes apart, and then i let them dry for almost a day.
I just got done wet sanding first with 1000 grit and then 1500 grit paper that i soaked in some water while i taped up the car around the lights. The sanding definitely lightened it up a little bit, and almost completely removed the VHT at the bends of the light, but i actually like how it looks with the lines of the rear end.
Then i took a whool buffing wheel i got in a Meguiar's head lamp restoration kit, attached it to my drill, and buffed the lights nice an smooth. I'm pretty happy with the results... Now for pics:
Before:

After:





