Having just got back from there, here are my observations: -
Dark blue tunic and trousers, very light blue piping on trousers, silver buttons. White shirt, black tie. Silver 'shield' type badge on left breast pocket, quite large (think US police shield) with an 8-pointed star on it which had a red-enamelled centre bearing the white crescent and star.
More senior officer seen strolling through the airport at Antalya: dark blue suit with gold buttons down front and on cuffs (3), narrow gold piping on trousers. White shirt and tie. Similar shield to more junior officers, but gold rather than silver.