What colour is the Delta II?
The light blue paint of Delta II is Federal Standard 595 color 25193. (This info, plus other good notes on insignia, were provided by Marc “Moose” Lavigne in the Sept/Oct 1998 issue of Sport Rocketry.) “Delta Blue” was introduced with the 2000-series vehicles, starting with Delta 100. Two subsequent 1000-series flights, Delta 109 and Delta 112, wore white; though Delta 112 is unique in that it had a blue interstage likely because they ran out of white interstages during the transition.