* Install a gif like http://streetfighter.wikia.com/wiki/File:Ken-hurricane-ts.gif Be sure to give it a cool name like tatsumakisenpukyaku
* Reference in a comment.
* In the maco details page it will look 'normal' (with the "I am transparent!" checkered background), in /macro it will look sort of blurry with a white background, but in the comment it will have a black background.
(I have imagemagick installed per T4096)