Not to thread jack, just thought I'd offer a little insight. It IS illegal to have your full tails tinted, as Dangeris was saying, there needs to be red visible. The length of light visibility is correct, my tails were way darker than yours and was visible from way farther than needed but they were still illegal and I still got tickets for them.
About 5 coats of VHT
Comparison shot with stock tail
I also had my tails painted for about a year before having to take them off (too many tickets) and there was absolutely no fading. The circle isn't hard to mask off, took about 10 minutes to mask off both.