WW II Canadian armour

Off the top of my head, I'd say the Staghound should be trusty US Olive drab since they were lend lease products, built and painted in the USA.  For this, I'd use Tamiya Olive Drab cut down with Tamiya Dark Yellow

Myself, I go with Tamiya Dark Green as that was the color of most Canadian Vehicles, granted that the Staghound was built in the USA.  The Quad was built in Canada using both Chev and Ford models. And as Canada was still within the British Empire scope, dark green would be alright, mixed with a bit of the desert yellow to fade it a bit.