iPhone 6 iMessages/ SMS LETS SEE WHATS THE NEXT BIG THING.....pop of color please

CAN IPHONE NEXT UPDATE.....have the option to set a background picture in text messages.....I see samsung has the option with looks pretty cool but however I love my iPhone & can't make the switch to a samsung I only like that you could do so...SO LETS HAVE THE NEXT UPDATE TO BE WOW 🙂......