Update: the seller was very kind about refunding my money and very easy to work with. If the paints are ever reformulated I will definitely buy them again!
The colors are vibrant and beautiful. They stink so badly that I don't like to stay in the same room with them. I may have to throw them out, which is a shame because the paint itself is beautiful. There is no color or pigment or lightfast information on the box or on the tube so there's no way to tell if they actually are professional grade. They smell so bad it probably doesn't matter.