As a Person of Color, to be perfectly honest this makes me feel really uncomfortable for reasons that I can’t quite seem to lock down/articulate well, but I’m going to try.
I’m not sure if you would call that fetishization, but I think it’s kind of weird and unsavory to pick a child’s traits period. If you are doing this for the child’s physical attractiveness/appearance, that’s extremely creepy and you should not be a parent.
Having a non-white child will not make you less racist nor have any tangible effect on the well being of non-white people. It sounds like you want to have a mixed child so that you can feel like you are doing something good for People of Color, like a really mutated form of a White Savior complex. If you want to really do something good for the world, try taking in foster kids, or adopting. There are enough children of color already living that need good homes. Having a mixed-race baby via sperm bank isn’t going to help anyone but yourself.
Edit: And even if your white ass DOES end up adopting a child of color, don’t think that makes you absolved from your racism either. You must constantly work against your white supremacist attitudes and your privilege.
Edit 2: Also, thinking about my experiences as a mixed person of color, it’s hard enough to construct a racial identity with how assimilated my Latin@ side of the family is, and dealing with issues like my class privilege and linguistic detachment from Latin@ culture. You shouldn’t knowingly inflict these issues on someone, especially if you, their primary caretaker isn’t even a person of color.
What’s up you stupid asshole? “Thanks” for your question! Racists always front like their good intentions or state of mind are the most relevant and necessary shit on earth, while people’s feelings of, “hey, I’m really sick of being compared to every actor of my race” are just some bullshit opinion. But guess what, assholes, you’re wrong!