Go for brighter colour such as white, yello or silver.... dark colours can visibly shows even the slightest dents on your car especially for more than 10 years old car as the metal fon to loose the surface shapes... try to see an old car... visible to see the paintjob is slightly wavy....
white or bright colours covers the problem but.... you will have ensure the gap (fender to door, door to door etc etc) are the same... if not... it will be asy to see some gaps are large from another... and dark colour covers this issue...
dark colour also not suitable for our car.. it is hot and promote rusts..... too hot+ humidity is a risk...