I have coined the term mustard for the rags.
My connotation for MU fans who are retards.
Vegetable growers sometimes grow mustard as a green MANURE
http://en.wikipedia.org/wiki/Brassica_juncea
It seems fittingly for in the Far East among the rag fans there is a colloquial Chinese saying 'ham choy' i.e.
for 'clothing or anything or anybody (in dishevelled appearance or disarray) that looks like rags'.
So please attribute this original moniker for the rags to me!