select a good primer. you can cut down more than 1/2 the time on how long it takes to paint dark over white or vice versa.
if you're painting a dark color over white, primer will also help smooth it out so you don't see so much imperfection
thanks! someone at work said. do not buy cheap paint. i was like well thank you for that wise suggestion. =P
although ralph lauren is $$$ its REALLY thick, took one coat to cover white with dark blue in a ~10x10 room
i'll remember that =)
yeah the primer, its a life saver!