Thanks 😂! Nowadays, I do not know any color or combination that do not have some association that would offend people. I would not even dare white-blue or yellow-blue.
If you look closely, you're the one being rigid about gender normative colors, though you seem to be projecting implication. "What if the partner is non binair" Then they can still be pink and blue... something wrong with that to you? Obviously, print them in your preferred colors