Yes, the LRDG vehicle is coming along nicely.
Azure blue was actually the underside colour for RAF desert aircraft - so it's not an official paint as set out for the Caunter scheme, nor any of the standard paints assigned to the MTO theater for military vehicles. To be fair to AA, it's Tamiya instructions that wrongly suggest light blue.
The other side of the arguement is that the actual paint shade, Slate Grey, once weathered would take on a light blue look, particularly when viewed in conjuction with the other paints.
regards,
Jack