Comments:  Click here for original article by Kim Tilley containing this & other recipes.
          This makes a good substitute for purchased watercolor sets, but tends to be more powdery.

1	tsp.	White vinegar
2	Tbsp.	baking soda
1	Tbsp.	cornstarch
�	Tbsp.	glycerin
		plastic botle caps, paint pans, or
		Styrofoam egg cartons
		Red, Yellow & Blue food coloring

1. Mix vinegar and baking soda together in a small bowl.
2. When mixture stops foaming, add cornstarch and glycerin, mixing well.
3. Pour mixture into bottle caps or paint pans
4. Add several drops of a different food coloring to each pan,cap or carton cup. Stir until the color is well mixed.
Be sure to add plenty of coloring, since the tint will lighten upon drying. Mix primary colors to make secondary colors.
For intense colors, try Kool-Aid or food coloring paste (Wilton makes great food coloring pastes).
5. Let set overnight to harden.