At the anniversary three-day crop for my LSS, this spring, I was asked to help with one of the make n take nights. I was given two pages of ADORNit Art Play paintable sheets to prepare as samples for people to copy or use as inspiration as they painted their own paintable card.
I used Prima Water Color Pencils and a water brush. If you haven't tried colored pencil water coloring, you really must. It is one of the most relaxing paper crafting things you can do. You just add a little color with the pencils, here and there, then blend with the water brush and it is pure magic.