I want to change the appearance of those 3 buttons, but I'm not sure where they are located on elementaryOS.
I see people talk a lot about Elementary Tweaks, but I don't know much about it. I know Linux can be funny, so I don't want to install a repository that somehow messes up my OS. Also, I'm not sure if there are any backdoors in it or not.
That is why I just want to do this manually, if it is even possible.