Engine color paint codes.
RM, Ditzler or Acme Jobber Paint Codes for Mopar Engines:
70's blue -- 5351D
turquoise -- 4799D but delete the metal flake
red -- like on 273 high performance -- 5092D
street hemi (1966) -- 5067DH
race hemi ('64 - '65) and Max Wedge -- 5065DH