Indeed, we know fromsurviving components and documentation that it can only be KG No.3...The lightness I think due to it being extremely matt when new and perhaps the lighting in those sheds.

OK, it does look pretty light in the shed and there is a white wall reflecting the light as well

Note the difference in the style of the Census numbering on the number plates of the two rows of machines.

email (option): keithchandler@clistandchandler.co.uk