Sorry man, BUT, I don't think that's the case. I know that, at least on my vehicle, the primer/undercoat is a dark color....all these are are imperfections in the clear coat. Like I said, I tried taking pictures last night, but....I'm having a hard time show detail on m white car.
Also, this car is barely driven. It's a 2001 and has 23,000 miles on it. Last winter it was driven at all, it was garaged....and actually I've only driven it twice this month! I'm too stinkin busy, haha....I want to get everything done on it before driving it....it's taken me forever to do the complete detail.