Paint fondant circles. Add small amounts of Pink and Orange icing colors to small bowl or plate; thin to paint consistency using lemon extract.
Using decorating brushes, paint design on fondant circles.
For gradient design, paint darker at the bottom and lighter towards the top.
For striped design, paint stripes in pink, leaving space between. Fill in spaces with orange, blending where colors overlap.
For splotched design, paint over entire fondant circle with lemon extract. While still wet, add pink and orange colors in sections, allowing color to pool and blend.
Let dry completely.