Some amount of gendered colors is a useful social shortcut. When our children were babies, we painted the nursery green because that’s my favorite color, and otherwise didn’t bother much with color. However when we went out we tended to have some obvious blue to make it simpler to talk about our baby. It’s easier for someone to say “he’s cute” because he has a blue blanket, than to have the “boy or girl?” Discussion.

Similarly our dog has a pink collar because it’s easier for someone to say “she’s cute” rather than “boy or girl?” And have some random person checking her genitals. It’s only here on Lemmy where people get pornographic about mention of a dog where they don’t know the gender