Drab referred originally to an un-dyed cloth (from the French drap) and its use in colour terminology came to mean a lightish brown. C18th century accounts refer to drab green and we have taken this idea to mix a beautiful brown green in defiance of its name. I have seen this colour used by clients to create really grown up rooms with depth and self-assurance. Early on it was used as an all-over colour for panelling and just as then it can be a successful tone for a scheme that treats walls and trim as the same.