Dufault scores 18 in 92-65 win for Colorado
Marcus Relphorde, Alec Burks and Cory Higgins added 15 points each for the Buffaloes (9-4), who won their 20th straight at home against a non-conference opponent.
Maryland-Eastern Shore (3-9), coming off an eight-day holiday break, lost for the seventh time in eight games away from home this season.
Hillary Haley led the Hawks with 18 points. Kevin White added 12 and Dishawn Bradshaw 11 for Maryland-Eastern Shore, which has lost both of its meetings with Colorado. The Buffaloes beat the Hawks 75-62 in 1993 in the only other game between the schools.