I got a sample pumpkin soufflé FO from brambleberry. I decided to use it for my personal soap using turmeric. When I got back to my soap, I saw it really brown. I started troubleshooting to figure out what went wrong, I didn't remember I changed my FO until yesterday.
I went into the BB site and found the oil you used. The info says this fragrance will discolor your CP soap to a dark brown. So it may have a lot of vanilla in it - which would explain the color. See the info -here-
But, I really think your soap looks great, it is a nice looking piece of soap to me!:- )