Somethings wrong with Iphone 5s?

So i was helping my grandpa with his new iPhone and i realized something was wrong with the images. Like, the camera, the pictures, the apps. The colors were different then they are on my iPod. The only way I can describe it is when you select an image on the computer and it turns kinda blue… I don't know what he did but I wanna know how to get it back to normal

You would have to take it to an Apple store. I know a lot about Apple tech but this issue is not something that one would be able to troubleshoot in this method.