It appears to be the desert tans of the FNVEF (Ford Nation Volunteer Expeditionary Force).
The beret is CF Military Police (MP). The Canadian Forces button on the cap is handed out to kids at parades (here it is taking the place of a hat badge). The spare lid looks like a standard US army ball cap. The shirt is from the Canadian Army summer uniform that was discontinued in 1996. The epaulets are CF army standard, with what looks to be a unique arrangement of officer's pips - perhaps he holds the rank of Captain (slanted). The City of Toronto pin on the left epaulet is not part of any Commonwealth dress regulation. The shorts appear to have been acquired at no cost to the Crown, most likely via a haberdasher such as Sears or Zellers.
While not believed to be large in number, the FNVEF make up for their lack of organization, direction and training with barely-contained rage against the system, a fierce loyalty to their leader and a healthy supply of Depends.