Therefore, a 6x135 wheel adapter will almost certainly NOT fit a Chevy Colorado without significant modifications (and likely causing safety concerns). Using the wrong bolt pattern is extremely dangerous and could lead to wheel failure at high speeds.
Before attempting to use any wheel adapters, you must verify the bolt pattern of your specific Chevy Colorado and ensure the adapter is compatible. Checking your vehicle's owner's manual or a reliable online resource like a tire size website specific to your vehicle's year and model is essential.