I am experimenting with a pan set of Pelikan Gouache. Gouache is a watercolor only it is opaque, not transparent like watercolors are. This kind of paint really shows it's attributes when applied to colored papers. I have used tan paper for this one.
Pelikan is the economy line, and the colors were a bit muddy. I did what I could with it, but I look forward to trying a better brand sometime soon, as it was exciting to use. The white really lights up on toned paper.