I agree in that I go with the non-blue one at first. If it ends up being uncomfortable or not as pleasant, try the other one. And if this is a non-refundable type item, then try to get her to make an exception for you if you go with her recommendatin and end up not liking it.

But I admit I'd probably be a little bit curious if I were in your shoes. But I'm also going to think it's more likely a kickback issue than an alien issue. =)