This is fact not guessing: No one hates Vivid black, man or woman. Any other color combination will generally NOT be liked by one or the other or both.
I started painting cars (not whole cars, just a few body parts) with base/clear paint about 3 years ago. I tried spray cans many times, almost never got good results.
Is it the 13 police bike? You could dip that thing in liquid gold and it wouldn't matter. Some people just don't want used cop bikes... Especially 13s... Worst year...
ANYTHING that was rebuilt by a back yard hack using conduit frame, pillow seats and rattle can paint don't normally sell well........they usually end up behind the car you can't find behind the wood shed.