
Had similar issue to your Property Steward with a Centrals game at Elizabeth hence they stuck in my mind - interesting thing was we contacted the SANFL in the week prior to the game with this question and they faxed the club a response that the Centrals shorts were blue (from memory) - good thing we kept that fax as it saved a rather large fine.
Pseudo - predominate jumper colour is Black - the different colour sashes do not really stand out - South (navy) & Norwood more a problem in inclement weather but still an issues under game pressure.