Cobalt blue
Cobalt blue in impure forms had long been used in Chinese porcelain, but it was independently discovered as a pure alumina-based pigment by Louis Jacques Thénard in 1802. Commercial production began in France in 1807. The first recorded use of "cobalt blue" as a color name in English was in 1777. The leading world manufacturer of cobalt blue in the 19th century was Benjamin Wegner's Norwegian company Blaafarveværket ("blue colour works" in Dano-Norwegian). Germany was also famous for production, especially the blue colour works ("Blaufarbenwerke") in the Ore Mountains of Saxony.
Blue Angels
On 24 April 1946, Chief of Naval Operations Admiral Chester Nimitz issued a directive ordering the formation of a flight exhibition team to boost Navy morale, demonstrate naval air power, and maintain public interest in naval aviation. However, an underlying mission was to help the Navy generate public and political support for a larger allocation of the shrinking defense budget. In April of that year, Rear Admiral Ralph Davison personally selected Lieutenant Commander Roy Marlin "Butch" Voris, a World War II fighter ace, to assemble and train a flight demonstration team, naming him Officer-in-Charge and Flight Leader. Voris selected three fellow instructors to join him (Lt. Maurice "Wick" Wickendoll, Lt. Mel Cassidy, and Lt. Cmdr. Lloyd Barnard, veterans of the War in the Pacific), and they spent countless hours developing the show. The group perfected its initial maneuvers in secret over the Florida Everglades so that, in Voris' words, "if anything happened, just the alligators would know". The team's first demonstration before Navy officials took place on 10 May 1946 and was met with enthusiastic approval.
On 15 June Voris led a trio of Grumman F6F-5 Hellcats, specially modified to reduce weight and painted sea blue with gold leaf trim, through their inaugural 15-minute-long performance at their Florida home base, Naval Air Station Jacksonville. The team employed a North American SNJ Texan, painted and configured to simulate a Japanese Zero, to simulate aerial combat. This aircraft was later painted yellow and dubbed the "Beetle Bomb". This aircraft is said to have been inspired by one of the Spike Jones' "Murdering the Classics" series of musical satires, set to the tune (in part) of the William Tell Overture as a thoroughbred horse race scene, with "Beetle Bomb" being the "trailing horse" in the lyrics.