DIY - Fingerpaints

I came across this recipe for finger paints on the internet a while ago. It wasn't until last week that I tried it out.

Ingredients:
3 tbs sugar
½ tsp salt
½ cup maizena (corn starch)
2 cup water

Method:
Combine ingredients in a small saucepan.
Warm until mixture thickens.
Stir continuously to prevent lumping.
Cool and empty in containers.
Add food colouring to create desired colours.

Ps. I added the colouring with the rest of the ingredients before heating.