This would be in /ps (under supporter settings) and toggle the color in your name... so you can be a diamond supporter and appear as a quartz supporter in chat. Maybe it could extend to /p as well, but this suggestion is focused on what was just mentioned. This would be good for those who don't want to stand out.
+1 Not only will it give players the ability to "not stand out", it'll help keep the names in chat more consistent and easier to read at first glance. I like this idea.
I actually find that chat is much easier to read if there are a few supporters in there, so the chat doesn't become one massive white block.
Interesting. I've never been in a situation where I had a coloured name and wanted to hide it, and I can't really conceive any outside social experiments.