If you added some flowers, pink text and cute kittens, they would probably accuse you of stereotyping.
If the sexes are the same, then neither rigidly aligned blocks of austere fonts nor flowers, pink text and cute kittens can be labeled as reflecting any sort of statement about gender preferences in aesthetics. If Ellen Degeneres chooses to appear in a short cropped hair style always wearing skater shoes, jeans, and collared shirts, is she “dressing masculine?” or is this imposing “gender stereotypes?”
It's clear those complaining about Wikipedia need to go back and finish their post graduate studies.