I've been trying more Golden heavy body acrylics, and fine that I'm liking them more than I thought I did. The first one I got was the Primary Yellow in a tube, but it seemed too runny to be heavy body. That turned me off for a while, but then so many people seemed to prefer it. When I asked an employee at Utrecht, she said that the yellows tend to be thinner than the other heavy body acrylics from Golden. I've been enjoying the kind of transparency that I can get with the Bone Black and medium. The Diarylide Yellow is a really warm color, and I got a jar instead of a tube. I'm glad that I did because it seemed like it had separated a bit. When I mixed it around, it became the consistency that I expected from a heavy body acrylic.