try www.canadiansoldiers.com.

What you are describing is khaki kilt apron. Scottish regiments wore these in the Second Boer War (1898-1902) and the First World War to "mute" their tartans in combat.

What I am referring to is indeed, a khaki tartan -- the 73rd Battalion of the Canadian Expeditionary Force in 1915 wore them -- a colour print of one can be found in the Osprey Men-At-Arms book "The Canadian Army at War" by Mike Chappell (plate "C").

It turns out that several Canadian Highland units wore these kilts, along with the matching "khaki" glengarry at the beginning of the war.

I wish I had a scanner so I could scan the plate in for everyone to see -- it is a most interesting tartan, to be sure.

Cheers!

T.