1/4 cup flour
1 cup water
3 tbsp powdered tempera paint
2 tbsp water
1/2 tsp. liquid starch or liquid detergent
 

Directions:

Measure flour into saucepan. Slowly add 1 cup water until mixture is smooth. Heat, stirring constantly until mixture thickens. Cool. Add 1/4 cup flour paste into small jar or plastic container. Add tempera paint and water for each color. For opaque finish add liquid starch. For glossy finish had liquid detergent.