How to Make It
Place marshmallows in a medium microwavable bowl, and microwave for 30 seconds. Stir in water, and microwave an additional 30 seconds. Stir until smooth. (If marshmallows aren’t melted, microwave in 15 second intervals until smooth, stirring in between.)
Stir in corn syrup and 1 to 2 drops of desired food coloring. Use immediately. To make multiple colors out of 1 batch of “paint”, divide the marshmallow and corn syrup mixture into small bowls before adding different colors of food coloring.