I can't really describe to you the wonder of this place and these colors. One day I was wandering and ended up in a small shop that sold only the purest powdered colors. The shelves are stocked with the richest tones you can imagine and some colors that you didn't even know existed. They are ground from earth and stone and plants or created by careful chemistry. Reading the catalogue I often stumble into poetry. This link is a pale shadow of the wonder, but will give you an idea.
http://www.kremer-pigmente.com/info/en_international/46400e.htm