Pitch, hot tar & pine oil was used long ago to seal lines, ropework and boats bottoms from rot. Oakem is made from hemp fibers and pine tar and used to caulk planks on hull and deck. Pitch black is my go to color both high gloss and dead flat matte. I painted my barn with falun black pigments ( a 30 year paint stain) and will char my next wood project to get that old black look. The crisp contrast of black next to white is used for lettering on signs and can be seen every where.