Salted butter, cinnamon-chocolate-cayenne and strawberry habanero pepper are a few of the funky flavor combinations at one of Denver’s newest ice cream shops. Smith+Canon opened this spring on East Colfax Avenue, and it’s a pint-sized café selling ice cream, specialty coffee and combinations thereof. “My friends call this ‘Curt’s ice cream parlor for grownups,’ ” owner Curt Peterson laughed from behind the counter this week.