Now using a cheese grater, grate the sidewalk chalk piece on the finest setting in the color of your choice. We did red, orange, yellow, green, blue and purple.
We used between a 1/2 to 1 full sidewalk chalk piece. Depending on how bright you want the color to be you can mix in more if needed. You can also reuse old chalk pieces that are small. If you add more chalk, you may need to add a bit more water to the recipe.
Mix well to combine the color. Add more grated sidewalk chalk in if the color is not bright enough.
The mixture should be thick but fluid, if it is too thick add a little bit more water to it.
Now take a funnel and pour the paint into a squeeze bottle.
Notes
Recipe good for 1 day. Use within a day. Also do not leave the paint inside the squeeze bottles overnight or the pressure from the mixture may cause the tops to pop off.