Wiktionary
a. Of a dark green colour, like that of the British army rifleman uniform. n. A dark green colour, like that of the (w: British Army) rifleman uniform.
Usage examples of "rifle green".
Another soldier, for some reason dressed in Rifle green, saw his expression and grinned.
Her wardrobes must be vast, but I'm glad to see she won't be hanging a jacket of rifle green along with all the other coats.
The Portuguese blue was darker than the French infantry coats and the Rifle green was much darker than the dragoons’.
The Portuguese blue was darker than the French infantry coats and the Rifle green was much darker than the dragoons' coats, but at a distance the uniforms might be confused.
The master corporal is long gone by the time I thumb lock open my locker and dress in the crisp rifle green that makes me look like a red ant in a nest of black ones when I'm out among the air force types.