Dark blue
The NWMP wore buff or steel grey breeches until they adopted dark blue breeches with yellow-gold strapping (stripes) in 1876. Members often exchanged kit with U.S. cavalry units, and while some believe this was the source for the breeches, the NWMP considered adopting blue breeches with a white strap. Dark blue with yellow-gold strapping is a British cavalry tradition, and most cavalry (later armoured) regiments' dress uniforms feature yellow stripes.