Have there ever been any other colours in Dexters ? Either recognised or not ?
I know its not like mixing paint but in other creatures, the colours black and white are quite often closely associated, with blue being an intermediary result.
If you have a look at a topic named simply 'dun', dated 30 May 2007 you will find an absolute goldmine of information regarding (from memory) wild red, true red and all sorts.
To make sure you get the right topic called 'dun', it's the one with 3 pages (on my computer anyway).