saw a great combination on the Crew of a Lear 55 the other day at TTN... both pilots looked the part of "business executive" with darker Khakis, a lighter khaki dress shirt and nice shoes, appropriate for a pilot. Not too flat or bulky, but a nice looking business shoe... talked to the pilot and said the company does the Khaki look and similar in green in blue (darker bottom, lighter shirt) and no tie... keeps a more relaxed look but still professional... other requirement was the hair and it was one thing, short... i think the pilots dressed better than the CEO's 5 feet behind them