Weight of paint depends a lot on the pigment. Some pigments are pretty dense a lot pigments are various types earth or metal oxides. Think like iron oxide (a da

Weight of paint depends a lot on the pigment. Some pigments are pretty dense a lot pigments are various types earth or metal oxides. Think like iron oxide (a dark red or brownish yellow) there are even heavier pigments. Organic pigments tend be lighter. Titanium dioxide is a very common pigment though since it is the main white pigment used for paint these days. If you have felt weight of titanium white vs lead white (only pretty much used for art these days) for instance you can tell the difference. Then you have some things that are not a pigment per se but are there to help with flow and other things but are not light either like kaolin clay. Also they can be used as filler to make the paint cheaper if used in excess.