When the fizzing subsides, slowly add the cornflour and syrup.
When mixed, pour into containers.
Add food colouring to each container and mix well.
The colour of your watercolour paints, depend on the amount of food colouring you use. To make darker colours, add more food colouring, for lighter colours, only add a small amount of food colouring.
Leave paints to harden. The deeper the container your paint is in, the longer it will take to harden.
Edible Version
For an edible version of watercolour paints, mix equal parts of milk powder and water together.
Add the juice from berries for colour or use other natural food colouring.