Help IDing Mk.II CL/C 1940 Flash

Formation sign on a CL/C 1940 Canadian Mk.II, early lot (nr.2), with a British FFL 1943 liner and chinstrap. Liner bumper marks and wear match, looks like it's always been with this helmet. If green it is the same as the Fourth Div., 47th Batt., of WW1, The Westminster Regt. in WW2:
https://en.wikipedia.org/wiki/Royal_Westminster_Regiment#Second_World_War

If blue, it cold be the South Saskatchewan Regt. of the 2nd Canadian Division, which used WW1 type formation signs on their helmets in WW2.
http://www.canadiansoldiers.com/insignia/formations/2divinsignia.htm
However, those I've seen are darker navy, and this looks like it could be blue, though lighter. Colors change over the years. It's got a rough finish, as applied to combat helmets. Also discussed and depicted here:
https://www.ghw2.com/topic/63031-mkii-clc-1940-canadian-formation-sign-help/?tab=comments#comment-766420

Help, comments are appreciated.
Regards, HB

ONLY 2 CID used the geometric scheme of formation patches in the Second WW. And it was phased out shortly after Dieppe, when 2 CID changed to shoulder titles and plain patches.

Bill wrote:ONLY 2 CID used the geometric scheme of formation patches in the Second WW. And it was phased out shortly after Dieppe, when 2 CID changed to shoulder titles and plain patches.

See this helmet:
https://www.cdnmilitarycollectors.com/t1188-south-saskatchewan-regiment-officers-helmet

Thanks Bill, that was my understanding. In application and appearance it is remarkably similar to another 2 CID SSR officer's helmet, though the paint color is a markedly different blue. Looking that this helmet, you can see how it is (was) blue, but lighter than the other very navy (to black) 2 CID flash. Paint mixes were different, can be effected by oxidation, etc., so it's conceivable that when this helmet was painted that was the blue mix they had, thus it was used. Some of the SSR uniform patches I've seen have indeed been lighter blue. Also, I would wonder if these flashes, once applied, would simply be left on the helmet and not removed. If they ceased using a geometric scheme, instead going to a formation uniform patch would that order have required the removal of the geometric flash from the helmet when the formation patch was on a uniform, not the helmet?
Cheers,
HB