They can't do this. Yes they can, apparently! The latest update for Daletto's computer fighter Street Fighter Online: Mouse Generation brings a special Valentine update with DLC for sale.
There are Valentine chocolate brown avatars (above, in the heart) available for purchase as well as a "Yes We Can!" avatar pack that includes, and we quote, a "brown skinned, short-haired figure in a suit." Oh dear...
『ストリートファイターオンライン』でも"YES WE CAN！" [Gpara]