That's gonna cause eye seizure on some people, multicolor is the huge disease occurrence to make them color blind such as blue, etc. They can't have that option as such.
If you're already on imgflip, or even the internet in general, with something like that, you're already taking that risk anyways. adding multicolored icons won't suddenly cause a problem that already exists.
This ain't something you want me to do, it will become a health problem if they do that, it will go chaos before going to the doctor. That's what I am trying to tell others that it's a bad idea.