My latest batch of System 3, via Pygmy, has a very definite dark, purple color in the part B hardener, vs.the golden honey of previous ones. Pygmy says no problem, S3 says "color does not affect properties, and sure enough, it seems to set fine, and at least a single coat on a test panel doesn't have any noticeable color. Still, I'm curious- any one else seen this? Unmixed, it looks like the color of grape jelly, and mixed, kind of dirty, but spread out, looks fine. I'm a little concerned about a possible color once I build up several fill coats.