Aureolin (sometimes called Cobalt Yellow) is a pigment used in oil and watercolor painting. Its color index name is PY40 (40th entry on list of yellow pigments). It was first made in 1848 by N. W. Fischer in Breslau and its chemical composition is potassium cobaltinitrite.
I'm loving this sudden wave of creativity on Audiotool. Maybe it's just because I've recently diversified my follow-base, but I'm hearing all sorts of new, cool sounds! Again, doesn't quite feel finished when you get to the end, are you going to be continuing this?