| http://www.w3.org/ns/prov#value | - colours called sky blue, one BS381 standard and one later, one notably darker than the other, I can not remember which) "sky grey (a Fleet Air Arm colour that found its way onto some RAF aircraft) eau de nil (a very pale green) and eventually "sky (the official light grey-green that didn't appear until very late in 1940.) Additionally the odd Spitfire squadron appears to have used white (althou
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