Pic 1 = I'd dig it more if you also tinted the clear third brake light and lower red reflectors to match.
Pic 2 = Hideous.
Pic 3 = Digging this one a lot.
Pic 4 = Keep it all black or all red, not both.
Out of those, 3 gets my vote.
I'll let you know though, I had tinted stock 2007 tail lights on my car for a while and it eventually got old. I didn't like the reduced light output (especially from the reverse lights) and I actually just got tired of the look, so if you go the tinted route, use a vinyl film that would be easy to remove, not paint.