Yup, normal Colombian BCI. Very nice looking snake!
I personally think you got a fairly good deal. She is not special, genetically speaking, if she's a normal, but she has good size to her and she appears to have good body weight and looks healthy. Normal Colombians typically run $40-60 as babies. So a sub-adult at $70 is pretty decent.
**Note - I said she wasn't "special" but I meant that only from a genetics viewpoint (in other words, she's not a high-value triple gene morph). I think normals are gorgeous and very valuable to a breeding program. No offense intended!