I'm pretty torn on supporting the colored prefixes for the rooms or not.

Because really there's no need for them. As Flames said, we all know what they are.
Really it's just un-needed dev work.

Then again it would be nice to help the new players know what is what.
But back to my previous point, it's useless work on the developer's part.

With the public room broadcasting..

Well that's been covered by the other posts, But as they said it wouldn't serve a purpose. It's really only made for ingame events such as staff based or member based tourneys and betting servers.