I think it'll remain green. Apple might feel pressure to implement RCS to ward off regulators, but keeping the chats green will likely still serve Apple's purpo

I think it'll remain green. Apple might feel pressure to implement RCS to ward off regulators, but keeping the chats green will likely still serve Apple's purpose. Even if RCS is 100% as good as iMessage, a decade of green bubbles has cemented the perception in people's minds. Even if people don't know why a green bubble is worse (and even if they aren't worse), it will still be their perception. Apple has no reason to change the color from green and let users know that they shouldn't care as much as they used to.