Yes, that's not doable on a stock iOS. But there is this sort of night mode in the iOS when you go to setting general accessibility invert color, some people like it to read, while it's not really a tint like you are looking for, that's the only thing close you can get on a stock iOS.
Jailbreak on the other hand have every single thing you can possibly want to have on your iPhone including of course tinting your screen however you wish.