To be fair this is actually something super easy for them to do. They are already doing it every ‘celebration’ month with the Togglable Visual changes of units. Like the venians rams or elephants with spikes.
Next month villagers are going to have boxing gloves!
Really doesn’t seem too difficult to give the option to have black villagers AND have it be togglable on and off.
More I think about it the more it’s upsetting me actually. SNOW MAN AT ARMS FFS!
EDIT: Maybe we can make a list of all the units that have official skins from past events and see how many there actually are.