No. They are tins/cans of paint. q=crate&biw=1109&bih=484&source=lnms&tbm=isch&sa=X&ei=3pOEVbqsIIHcUbKLgsAG&ved=0CAYQ_AUoAQ ..
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contrapositioncrates of paintNo. I'd say 'buckets' or 'cans' of paint.