a custom color is always going to be better than your original color--but as already stated it will cost you a pretty penny. if had the $$ to spend--i'd go custom. if i didnt-i'd stick with super white.
in my case, i have a widebody kit on order that comes with complete front Fender
replacements and big rear Fender
flares to go along with the usual front/rear curtains and sideskirts...so the only thing left NOT replaced is the doors and the 'roof' (even though my sunroof takes up almost all of it)...so i'm going to do a total repaint as well--probably with a custom color.