This book separete the functional space into home, office,etc. then provide a comprehensive check list of what need to be considered when design a universal bathroom. Although, color is not discuss in detail. One check list is about lighting. We all know the dark color absorb color and light color reflect color. When choose a color ,therefore, a lighting color might be more suitabe.
Saurce: Roberta L. Null, Ph.D. and Kennth F. Cherry, Universal Design, Professional Publications, Inc. 1998.
From Yu-Huan Wang
Workplace Design Principles 