Thanks for the replies, everybody!
Hvrba, it's good to know that you've used this particular FO with no issues.
And thanks for that vanilla content chart link, asliceofdelight! I didn't even know that was out there.
I kinda figured that if BB didn't mention that FO discoloring then maybe it wasn't an issue, since they're usually really good about giving you a heads-up on stuff. But when I saw that it had vanilla notes, I got to wondering ...
I made a bar with Buttercream & Snickerdoodle today (a really ugly bar -- some soaping days are better than others!
), so I can at least set it aside for a few weeks and see how it does.
Browsing through the chart and BB's list of FOs, it seems that some FOs with a small percentage of vanilla may discolor. Like the Pepperberry is 2.8% vanilla according to the chart, but BB warns that it can discolor to light brown or tan?
I guess it all boils down to this: I know how to use vanilla stabilizer, but I'm not sure when to use it. Guess I'll just have to trust BB to tell me when I need it.
Thanks for the help, everyone!