His crime was being pedantic about the definition of rape around people who can't even differentiate rape from underage sex, which are probably the same people that are interpreting it as Him defending underage sex.
The car looked gray because it had a protective coating on top, thus you get some amount of diffuse/specular reflection from the camera's flash and surroundings.
You are generalizing. I am doing a MicroMaster in data science from MITx and they grant the equivalent credits of the first semester. It's worth something if I ever apply to a similar master program.
If we were to shine a light into vantablack in a dark room ~0.04% would be reflected but it would be enough make the object visible. So, it is possible to differentiate both paints in those conditions.
Had the same idea 5 years ago but never tested it. The way I thought about solving it was more complicated, it involved a laser protector matching the absorption frequencies for each photochromic crystal (CMY) thus selectively heating each color. The only manufacturer of photochromic inks I knew was Zink but I didn't even imagine they would be willing to ship me some samples because they use them for their products. I could have asked my university for help but their policy was to keep 98% of the patent.