I've seen posts asking about this issue, that it's been restricted to type ALT characters (such as §, or ALT 21) into Minecraft from a certain version, but I keep seeing answers like "you can only fix this by changing client changes" or "only possible in NBTExplorer". How exactly could I do this?
I'm also trying this in a multiplayer server, to color item names in anvils, I think it was possible at some point without commands, but I don't remember. So if this isn't possible without permissions or other players won't see the color of the item name and it's only local in the first place then I'm sorry for wasting your time.