Is it one deep scratch or a patchwork of tiny scuffs/scratches?
If it's a single line, then you might be able to minimixe it by coloring in the line with a fine black felt marker or a fine paint pen or something similar. If it's scuff marks then it's a whole different story. Scuffs look natural, while a poor refinishing job looks artificial. You might be best to just leave it alone then, especially if you can't match the paint and the gloss/shine perfectly..
Bob