Step 1: Place 3 cups in a row. Fill the cups with water.

Step 2: Add 5 drops of orange food colour in the first cup. Add 5 drops of green food colour in the third cup.

Step 3: Take a long piece of paper towel and fold. It should be 1-2 inches wide.

Step 4: Place a part of the rolled paper towel in the first cup. Place a part of it in the second cup and remaining in the third cup.

Step 5: In around 6-7 minutes, you will be able to see the flag colours on the paper towel.