a darker colour will only show panel work imperfections greater then another lighter colour
but if you look back he was more specific in the painting imperfections
all colours will show paint imperfections as a paint imperfection will stand out no matter what the colour
That was my quote you referred to. Black paint shows EVERY speck of dirt, dust, bugs, moose **** and other foreign bodies that exist, just looking for a nice sticky surface to settle on. Sure, all paint will show the imperfections from airborne contamination to some extent, but black (and other dark colours like Raven), look worse.
I was also talking about the effects of any breeze on your paint coverage, if there are any breeze gusts, they can disperse the spray away from the intended target and create overspray over areas just painted. That was what I meant by a patchy finish. Don't infer I don't know much about spraying, I have resprayed complete cars and restored them from the ground up - I know the dangers.
Other issues to consider that haven't been mentioned - someone said make sure its nice and hot. No - hot panels cause the paint to dry before it hits the panel, leading to a rough and sandy finish. Panels ideally should be kept out of direct heat, and you need to try to ensure that they never get too warm.
Also, humidity. This can kill a good finish. If the humidity is high, don't spray outside, full stop. You will get a milky finish to your paint which won't rub out - you will have to wet rub and repaint when the humidity is lower.
