A few more concepts, this time modeled by MrFlak on FA.

Uniforms for sharpshooters and skirmishers are green rather than the gray of the standard uniform. (Mountain troops may also get the green uniforms or at least have their own sharpshooter and/or skirmisher regiments. I haven't entirely decided yet.) The camo smock and the sniper veil are also equipment associated with these units and provide a certain amount of camouflage. The veil is made of a mesh material and the smock features loops, both allowing for local foliage to be attached to aid in camouflaging the soldier.

The air force uniform shown is one variation I had in mind, substituting blue for the standard grey. Another version I had in mind kept the grey jacket and used a blue shirt instead.