Board Thread:Support Requests - Designing Your Wikia/@comment-27725192-20160725201314

This question may come off as confusing:

So, I've seen wikis and noticed that some of them have some properties changed, like the words on the edit button: Instead of saying edit like usual, it says different things, and the top navigation has several colors or is more bulky, in the box with the button that says join the chat, the background is different, and so on and so forth. How does this work? How can I do it for my wikis? 