Blue nursery for a girl?

I'm not really all about gender roles and I have picked my nursery but I do not know the sex of my baby yet. 
I sent a picture to my mother in law and she said it wasn't girly enough if the baby is a girl? 
I personally don't agree but what do you guys think?
I would paint the walls blue as well and decorate with bears and woodsy things. I'm not a fan of girly things 🤷🏻‍♀️