Blue Line Acrylic Paints optimised for brush Step 1 in advanced colour system for realistic panel lighting technique for early WW2 German AFVs in overall panzer grey Also Used for engines / mechanical parts Also for interiors of German trucks and light (open) AFVs Also Dunkelgrau No. 46. Used from mid-1937. From mid-1940 till early 1943 a standard base colour of majority of German AFVs Also RAL 840R – 7021, base camo colour (from mid-1937) and later overall colour (from mid-1940) of majority of German AFVs