what is the towing rating on your Colorado?
Samurai weigh in at 1800-3000 pounds depending on the mods.
Add a 1500 pound 2-axle trailer and you are up to as much as 4500 pounds.
When you add in the vehicle weight of a Colorado, you might find that what you are towing weighs more than the Colorado!
Of course all of this is speculation because I don't know anything about a Colorado - you do though. The answers are in the Owner's Manual or at your local Chevrolet dealer.
I'm not trying to be a smart-$%* here, it's just that an Internet forum is the worse place to ask this type of question. All you'll get is opinions. You need facts. Those are often a scarce commodity here...
I hope that this helps!