https://www(.)mediafire(.)com/file/7rtnkb20xle8ftr/242242399_paintable_medical_mystery.zip/file

(Replace (.) with . to access the URL. I had to do this otherwise it wouldn't accept the link). Mediafire is safe, don't know why Steam blocks it.

This is taken from my Garry's Mod workshop submission that made the Medical Mystery paintable.

You guys can use these files to update the item to support paintability. No credit needed, I just want the item to become paintable, that's all.