How to get the right shade? I only use Wilton paste icing colors - they are more expensive than liquid food coloring but will last you a lifetime. You only have to use a teeny bit on a toothpick for very vivid colors. Here’s a chart for getting the colors you want and for flesh it states:
FLESH: Add just an extremely small touch of Copper to white icing. Ivory can also be used. Light pink with a small amount of brown.