Add one to two cups of oats to a bowl or a zip close bag.

In another bowl add two tablespoons of water. Choose the first color you would like and add 10-20 drops to the water, you would like the water to be hard with that color.

Add about one teaspoon of the color water at a time until you have achieved your desired color. 

Layout two paper towels on your counter and pour your oats onto the paper towels. Spread them in a nice even layer.

Repeat steps 1-4 with however many color oats you would like.

Allow the oats to dry overnight.

Stir the oats to break up any lumps. If you have any damp spots move those oats to a dry piece of paper towel and allow them to dry.