Stampin’ Up! has lots of videos about coloring.  Here are a few.Coloring on Vellum Watercoloring with Blender Pens Watercolor Wash Watercoloring with Stamps and a Stampin’ Spritzer Watercolor Background with a Clear Block Dip-Dye and Faux Dip-Dye Stampin’ Spritzer Spritzing and Splattering Coloring with Stampin’ Write Markers AquaPainter vs. Blender Pens Kissing Technique Stamping with Embossing Folders