I love, love, love these markers!!!!! They are awesome for controlled watercolor techniques and coloring images. These come in a variety of sizes ranging from a collection of 12 markers up to a total of 80 markers. Insider tip: Just buy the 80 set - you won't regret it!
Here is a blank Zig Clean Color Real Brush Markers color chart for you to keep track of the colors you have picked up and use as reference when creating! It is formatted to be printed on 8.5" x 11" paper and works best when printed on watercolor paper. Enjoy!