don't laugh at this but... would it look the same? i saw a pic of a guy who had his painted and it blended right in with the glass and everything it looked awesome. it looked like the roof of a scion or a veloster.
this pic was posted by cosh68 its a black gloss and i think that looks amazing...
I think it would depend on the finish of the vinyl but yes it should flow seamlessly into the glass and sides of the roof. You might want to look it up on YouTube to get more info.