Not to sound ignorant but I'm a little confused. Someone I know was talking about some amazing T+ Columbians and I am not 100% certain of what this means or what they look like, or what use they are in breeding. I'm more of a Ball Python person, you see, and am a little in the dark.

And when I tried Google, I got a lot of totally confusing different things. Anyone have a clearer idea?

Thanks in advance for your time.