Dark Gray Wainscoting Bathroom . Some other deep color that can be used is gray. It’s all in the name—the idea of a mudroom is to contain the mud. Light grey bathrooms image by Sharon T on Bathrooms White wainscoting from www.pinterest.com Some other deep color that can be used is gray. Put your home’s extravagance on display by adding intricate designs to the wainscoting, and have it placed not only along the walls but also around doorways. Budget $ (1983) $$ (17332) $$$ (21732).