Greasy Fork is available in English.
a free and purely cosmetic script that lets you use custom skins during games, it even lets you make your own skins!
< Feedback on Free Custom Surviv.io Skins and Mods (FREE SURVIV GOLD PASS #11)
only you can the see the skins I thought that was clear
and everyone with default skin will have the skin you select that's how the script works
a few problems
the skins don't show up to other people, and everyone else has the skin you select, it is pretty glitchy