Well I don't know many standard patterns that would use white or very bright colors at all - must be a reason for it!
For example: the old Swiss-Pattern had a few white spots on it, see for yourself if it works... Compared to that, the old soviet pattern works quite well in green areas on sunny days with lots of shades and bright spots... (see:
http://www.airsoftcanada.com/showthr...3&page=1&pp=15)