A Catalog of WaterColorBot Paints
The "standard" paint set that we use in the WaterColorBot is the Crayola washable 8-color pan set, however many other common paint sets can be used. We've compiled a list of other common paint sets, along with photos and recommendations, which you can find here.
The thin plastic palette that comes with the Crayola set can be washed out when empty (or nearly empty) with cold water, and re-used with any tube-based watercolor paints.
Alternative paint pan palettes for artist-grade paints
Evil Mad Scientist is distributing a machined plastic palette, designed to fit half-pans of Windsor & Newton and Cotman water colors in the half-pan size. It is available for purchase here.