I like the idea.
I have always wanted to do a Canadian M-60A1 in the OD/Olive Green/Black cam pattern.
Or an upraded 'Patturion' Centurion with M-60 engine, reactive armour, long range fuel tank, and mine rollers...and the three colour modern NATO cam colours.
Others I have entertained for Canadian subjects:
M1A1 with mine rollers (UN white)..serving with UNPROFOR, RCD
Leopard 2A5 ( UN white or desert tan) ...UNPROFOR, 12 RBC and OIF, LdSH(RC)
Marder MICV (desert tan) Gulf War 1991, RCR and OIF, PPCLI
Challenger 1&2 (NATO three colour)...Germany, 8CH 
Weisels (desert tan)...Gulf War 1991, LdSH(RC), Recce Sqn for 20 mm, and RCR, Anti-Armour Platoon for TOW
Luchs (UN white)....UNPROFOR, 12 RBC, Recce Sqn
Scimitar(three colour cam)....Germany, 8CH Recce Sqn
AAV7( UN white, and marked as the notional RCMR...Royal Canadian Marines Regiment)
Leclerc(UN White),  UNPROFOR, 12 RBC
T-72M1 and BMD-2(UN white and NATO colours...maybe there was a change of direction in the Cold War)...Germany, 8CH and Canadian Airborne Regiment, Somalia
Centurion AVRE (UN white) UNPROFOR, 1 CER
"We're not the public service of Canada, we're not just another department. We are the Canadian Forces, and our job is to be able to kill people."
July 2005- General R.J. Hillier (Retired), Former Chief of the Defence Staff