Coloring and onion skin

Im a bit of a noob but I was wondering? If its possible to see the colors in the when you use the onion skin… you know different colors cuz im using a different color to make a shadow … on a character.

If you go to top menu Animate Pro- Preferences the preferences window open.
Go to Drawings and there you choose Normal from the OnionSkin Render Style.

Hope it works out for you.