I chose to do food coloring and water because you can see the food coloring very clearly in the water and how the color spreads out. Every time a color faded out, i added another color. I used my IPhone camera to take this gif. On the iphone, i repeatly clicked the capture button to get every step of color spread in the water. I put the jar of water near the light so you could get a clear light of the food coloring. I took these photos at eye level view. So you could see right through the jar and so you could see the food coloring from top to bottom.