The reason it was added is because I've seen too many people miss the first upgrade (damaged helmet) and for example stop playing there because they kept dying when running outside.
Also the color is not final or anything, right now it just uses the random color accent the game chooses for menus on startup.
But with all this being said, it's very easy to add an option to turn this off so I'll probably do that then.
It will probably be on by default for now though because of the reason mentioned above.
Thanks for the feedback. :)