Red haired babies

Pa

My son was born with red hair including his eyelashes and eyebrows. And I love it. Me and his dad both have brown hair ans eyes.

But both of our families have red heads. He also has blue eyes.

So I am wondering if anyone who had a red hair baby, at what age did their hair start to change, if it did?

He is almost 9 months old

A picture because he is so cute.