Let's also not mention the social stigma and peer pressure kids exert on each other because they don't have an iPhone and their name is apparently some different color one chat window.
Yes, the green vs blue bubble. Blue bubbles indicate iMessage. Green bubble is for sms. It’s brutal in group chats because just one green bubble user forces everyone to downgrade and get shittier pictures, etc. So it’s not the color itself, it’s the worse experience that accompanies it.
I don't really have many techy friends though so, that might weigh into it a little.