By reading this thread, if feels like a bunch of you are reading into this suggestion thread incorrectly so I will try my best to explain what I believe OP (
@xJariBoy) is trying to suggest and if I am wrong, then hopefully they will correct me.
At this moment in time, when you purchase a rank on
store.cubecraft.net you get the ability to use colour codes in chat (eg: '&cThis is a sentence in light red.'). This also means that you can create messages with colours literally anywhere. So, if you wanted to be obnoxious, you could indeed send a message like this in the chat: '&aT&bh&ci&ds &ei&fs &0a &1s&2e&3n&4t&5e&6n&7c&8e&9.'.
The feature that this thread is actually suggestion is to add a Setting to allow users that have access to that feature, select via a command (although a menu via the Settings menu would be nicer, a command could also be added) a permanent chat colour for all their future message. You wouldn't be able to select multiple, just one. So if I selected Yellow, then all of my messages would be prefixed with '&e', making my message appear in... Yellow. That's it. This is something you can do anyway, but it's just more inconvenient to have to type '&e' at the start of every message you send in the chat ever.
Hopefully that clears things up and like I said previously, if I am wrong then hopefully the OP can correct me! :)