Dark Areolas... Bf says they look blue

Mikayla • In a 3 year committed relationship with an amazing man❤️ Mama to 2 fur kids🐶🐱. TTC baby #1👶🏼 Anovulation😞

I’m 9dpo and my bf made a comment that my Nipples look blue... and are darker than normal... is this a pregnancy sign?!