Sketch indigo and woading patterns on skin with blue aquarellable pencils.These pencils will help you get more complex, more perfect body art work by allowing you to sketch and fiddle before you commit to the final design. Aquarellabe Pencils can help you have to happier customers and more perfect bodyart work. Aquarellable pencils make knotwork easy! Here's how to use Aquarellable pencils to lay out tricky knotwork designs.