This is a change I would very much support.
When implemented correctly, it's not at all immersion breaking. Honestly I've had the complete opposite experience. Seeing a message pop up in chat in a different color that is distinctly for OOC makes finding what I actually need to read significantly easier. It's especially a God-sent in public settings with groups having multiple conversations of their own. "Oh, grey message from John Doe? I can ignore that." And then I do. It's that easy.
I think something like this is nice. It's dull enough that it doesn't really draw attention, but it's distinct enough against white to not be mistaken for a normal message.
When implemented correctly, it's not at all immersion breaking. Honestly I've had the complete opposite experience. Seeing a message pop up in chat in a different color that is distinctly for OOC makes finding what I actually need to read significantly easier. It's especially a God-sent in public settings with groups having multiple conversations of their own. "Oh, grey message from John Doe? I can ignore that." And then I do. It's that easy.
I think something like this is nice. It's dull enough that it doesn't really draw attention, but it's distinct enough against white to not be mistaken for a normal message.