Twitch has a setting in their URL to adapt emotes for light or dark background.
Right now I'm using dark as a default, but would be neat if the user/dev can pick it for its case.
https://github.com/mkody/twitch-emoticons/blob/f1c98f05dab225a3ca2e07cff399223290af1d26/src/util/Constants.js#L3C85-L3C89