Mysterious Movers Color Experiment. Watch the video. Use your observation skills to see how the colors change. At the end of the experiment tell me what you observed. Why do you think the Q-tip without anything on it did not change the colors? Why did the Q-tip with the dish soap on it change the colors? You can try this at home with your parents help. You will need: a small saucer, a little milk, liquid food coloring, a Q-tip, and a couple of drops of dish soap.