Interesting topic. Here is my latest blended paint effort on the lower half of my Isuzu Trooper's left rear door. The paint on the right half of the door is original and I was pretty able to successfully blend the left half with a rattle can. Will need to attempt a 2K clear finish, which I am not confident will turn out, but not sure I care given that the whole vehicle could use a respray. Just can't stand fully mismatched panels on even a beater fishing vehicle.

[Linked Image from i.imgur.com]

[Linked Image from i.imgur.com]

The difference between the front and rear door is an optical illusion created by the lack of clear - the match is actually shockingly spot on. Amazing what you can order these days.