[header] How to make colored rice for sensory play [title] Gather your supplies. [step] You will need a pack of white rice-ideally you would use one that is almost or at its expiration date, but otherwise you can just purchase the cheapest pack of rice you can find. You will need one cup of rice per color of your choice. 
You will also need [substeps] White vinegar-½ a teaspoon per color. So if you're making five colors then that's 2.5 tablespoons of vinegar.