To Make your own colored
Sand,
Fill paper dixie cups half full of sand. Add enough water to each
dixie cup to completely cover sand, Add drops of food coloring until
desired darkness (color). Stir well. Set aside for 20 minutes.
Carefully pour out the water (you can use a coffee filter for this,
to make it easier.)
Dump the sand onto paper towels, spreading it out & air dry.