In his delightful book Rearsby Recalled - Les Leetham describes the Aircraft as being fabric covered to the civil scheme (lighter than military),and the finish as Bright Orange,he also says that civil wing tanks were fitted (self sealing not reqd) giving 16 gal per side.
Les was a wartime Wireless Op/AG - at the completion of his first 'tour' he managed to retrain as a Pilot - awarded his wings near the end of the war.
Postwar he had an interesting working life with Auster - initially employed as a Fitter but later became Fitter/Test Pilot.