Danny Dichio added his team-high fifth goal as TFC remained undefeated at home this season and extended its unbeaten home streak to nine games dating back to last season.
Toronto FC (6-4-2) has already matched its win total from last season, when the expansion club had the worst record in MLS.
Christian Gomez scored the lone goal for Colorado (5-7-0) to snap Toronto's run of not allowing a goal at home at 403 minutes. Toronto has allowed just two goals in seven home games this year.
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