@Axel : Username search for "Cody" doesn't seem to bring up anything, and a search for the topic of "dark grey ui" doesn't bring up anything related to v4 either. Please provide a link to the thread/post you are referring to. Thanks !

@Jason : It seems like the main component of this UI edit is the moi.css file from the original zip download. So if you just get that and place it into the ui folder of the beta it will at the very least change the bright blue interface to grey.

As for icons : it seems like the ones in the zip are the orignal, unedited ones (dark lines) so I suppose that the Dark Theme for V3 inverts them dynamically ... maybe ? Only a few need editing anyways and that's trivial to do.