by Felix/FFDS » Wed Jun 02, 2004 9:32 pm
Reference - Sc ale Aviation Modeller INternational (SAMI), April 2002 "Defenders of the George Cross Island" p348
"Supermarine Spitfire Mk.Vc, BR124/U-2, No. 603 Squadron, Operation Calendar USS WASP, 20 APRIL 1942. Spitfires were repainted while aboard the carrier in what pilots described as a ' dark blue' (most probably Non-Specular Sea Blue) on all upper surfaces, leaving the original markings visible. This was intended as a temporary measure to make them less visible during the ferry flight. Temporary codes in white ("1" was allocated to No.601 Squadron, "2" to 603 for the ferry flight only). Aircraft was destroyed in an air raid 8 days later".
So the blue was painted over the Dark Earth/Mid Stone camouflage (BR124 serial in black, but set against the original Dark Earth background which was not painted over ); Azure Blue undersides.
Hope this helps
Felix/FFDS