I noticed today when putting my rabbit hat on my armor stand, the hat was blue in my inventory and on the armor stand but was pink both when equipped on or armor stand look was copied to a female character. This would indicate armor stand is always male.
Instead of forcing armor stands to be male, or even match the character's gender, it would be nice if people could chose gender of armor stand (via button in armor stand interface), and even better if one could copy the version of the item for the armor stand's gender to the player. It would be nicer still if the gender could be assigned to each piece of armor; though this might be excessive. This would mainly be useful for people wishing to display different versions of rare armor. It would also (if look for armor stand gender is copied to player) allow people like myself who prefer to play as their own gender but prefer the appearance of the opposite gender's version of certain items (rabbit hat in my case) to wear that version.