My little guy was surprisingly calm and just hung out on my shoulders the day he was dropped off but it could have been because it was a new environment.
The second set of pictures is are ones of my brother in laws female while the first set are of my little guy. Castro (my RTB) has VERY little pinks on his body and is a lot lighter than the other including his "red tail". His head and body are almost a white in color, or creamy white.
Wow, He's beautiful! It is quite a difference but still pretty.
I did not realize that was two different snakes when I first saw this thread. Honestly, yours to me looks like a normal Colombian boa. Good looking nonetheless. It could be a pastel. I just do not know enough about them to say definitely one way or the other.