After Mannix captures him, Barney, in referring to Danford, the candidate he represents, says Danford was solid gold - a 14 karat winner. Solid gold is 24 karat; 14 karat is less than 59% pure gold.
When Mannix was attempting the first blackmail payoff and the culprit was fleeing the sky seen was light blue even though it was supposed to be night.