Ha ha. Or of course the ubiqutous leaving a line in the DOB!!! The sign of a true simpleton, tenacious persnicketious to the utterly banal points, you can write utter sh1t as long as it is written on a ruler, with a space between.
Think about it though. Coloured board names, colours for the state of units, colours for inspections... it is just easier that way. And you will note taht the colours of the boards correspond to the colours of trousers that are worn.