What bear did I see in Colorado?

I was on a trail in Summit County between Keystone and Breckenridge and there was a large brown bear waddling away from me, sniffing the trail for food I suppose. Hump on its back, so I was thinking it's a brown bear, not a brown black bear. Didn't see the snout, so not sure if it was a grizzly or not. Lots of misinformation or contradicting information on the web, so I was hoping someone here could help me. THX.