If you want to make multicolored leaves, you will need to be using white chocolate or white candy coating. Divide the chocolate into multiple containers and color the portions using oil-based candy and chocolate colors.
Pour the multicolored chocolates onto a large plate, drizzling them together in random patterns. I recommend having a larger proportion of lighter colors, since the motion of running the leaves through the chocolate will begin to mix the colors and the lighter colors will soon turn darker.
