There has been an on-going meme around users using imessage getting messages from other imessage users which appear as one color and messages from android users(or anyone I think?) as another. So people know you are the android user in a group of apple users or whatever.
I did not think any one gave a shit outside of kids.
I have a group of adults in my social circle who won't migrate a group chat to anything other than iMessage so that I can participate. I'm genuinely angry at them for this and angry at Apple for its role in creating the situation.