As for hats. Thanks God I never had to wear those hats with the scrambled eggs on it.
The scrambled eggs hat decoration was part of the uniform for very senior ranking military officers. I joined a British charter airline back in 1989 as a direct entry captain and was told to visit the BA clothing store to pick up my new uniform - standard issue dark blue. The clerk at the store asked me to try on various hats for captain rank which again were BA standard with scrambled eggs peak. I felt so embarrassed at this pseudo Air Commodore finery and opted instead for the standard issue plain hat sans scrambled eggs. The clerk merely shrugged his shoulders and muttered "your choice".
In the two years I flew with that airline, not one person noticed - which is what I hoped..