But, boy, do I think it makes sense to give up this practice. Grand Haven High School (MI) used to graduate students in yellow for girls and blue for boys. Now they are going for all blue.
The story included a fair bit of whining, including "Not all parents are pleased either. If they only had daughters, and were
planning to reuse an older sister's gold cap and gown, they will now
have to purchase blue ones." Which overlooks that in future there will be savings to be had in being able to pass down any gowns that will fit to anyone who can use them, regardless of gender.