Everything Enabling Onion Skin in the Drawing Desk You may end up with a lot of drawings in your onion skin display while working with the Shift and Trace feature. You can disable individual drawings from the onion skin display without deactivating them. How to enable and disable individual onion skin drawings In the Tools toolbar, click the Onion Skin button. In the Drawing Desk, click on the drawing’s Onion Skin button to enable or disable it. When enabled, the icon's colour changes .