Interestingly about 100 years ago it used to be the reverse. Pink was seen as a masculine colour while blue was considered feminine. Goes to show how arbitrary a lot of the gender norm rules are.
Not very long till a nerd shows up. My favorite is that FDR wore gender neutral clothes, including dresses, and did not get his hair cut till he was 7. A bizarrely more progressive past activity.
My 5 year old son LOVES pink and purple. Anytime he can find anything on those colors he's all in. He picked out a pink crayon box and purple lunch box for Kindergarten here soon and my mom (who was taking him shopping) called me to make sure I was OK with him picking those.
"Yes mom, I don't care if he picks out things in his favorite colors." 🙄