1. Take one of the remaining fondant balls and flatten it into a round disc. You might want to wear gloves to avoid getting food coloring on your hands during this step. Add 4-5 drops of yellow food coloring to the center of the disc, and fold the disc over on itself so that the color is enclosed in the center of the fondant ball.
2. Begin to knead the ball of fondant just like you did before. As you work it, you will begin to see streaks of color coming through from the center.
3.Continue to knead until the streaks are gone and the fondant is a uniform yellow color.
4. Repeat the process with the third small ball, adding orange coloring (or a combination of red and yellow to produce orange) so that you end up with three smooth fondant balls, in white, yellow, and orange.