Yeah same here went to said place and looked at a black M35, what put me off was that when I said I wanted to get it professionally inspected and he wanted me to put down a deposit (wasn't comfortable with that) and then went on to say that the car had an issue and he knew what it was but wasn't going to tell me. After that I just walked off, no need to deal with that.
The car was on top of all that had been painted black so that lead me to believe that it had either been crashed and they couldnt match the paint and so just took the easy route and painted it black, his reason as to why it was black was cause they wanted to try it out and see if the car would sell. What horse shit is that??? Who paints a car just for fun so that they can see if it would sell.