It's the strangest things one suddenly notices when starting over from the beginning for the fourth or fifth time (I lost track). This time it's the uniform colours. We know the colours of historians, security, IT and technicians. What about R&D? Do they count as blue? Or the kitchen, or wardrobe, or the PA's or the library. If Dr Dowson is not usually in a brown grandpa cardigan and half-moon glasses, I shall riot!