Being a retiree from the chemical coating industry, I do not reccommend using spray paint in any grow area...even tho ya think the paint has dried due to the 'fast-tail' solvents escaping, there are many 'slow-tail' solvents still evaporating for quite some time...msds sometimes will not show proprietary incredients.....I def rec FLAT white latex (brush applied) as it aborbs very little light and relects very little heat....good air exchange minimizes any heat reflection...