Colby had his first win at Seymour in 1996 winning BMPIG and RUBIG and his last show in March 2000 when won BIS.
Along the way he has won 3 Royal Challenges at Canberra, Toowoomba, and Sydney Royals. At Toowoomba Royal he went BIG under Mr. Jarman from South Africa.
Colby has also won 2 BIS, 10BIG, 10 BIIG, 3 BPIG and has
has amassed 1405 Challenge points.