So, so far, we have the following colours..
Plain white for yourself.
Blue for private messages
Beige for regular players
Gold for supporters
Red-orange for BATs MATs or anything else important staff to osu! etc etc
Cyan for peppy (DUH.)
Pink for BanchoBot
Green for highlight
But, with how much other special roles..?
Like Multiplayer room host, or someone on your friend list, or the player that's playing in a spectator room?
I honestly think they deserve their own colours too...
Perhaps we can have..
Navy blue for spectator room host
Purple for friends
Magenta for multiplayer host
I thought this wouldn't be too hard to implement, so.. why not?
This way, when there is a lot of spectators for a player, we can see at a glance what the host is talking about.
And also, if you only want to talk to your friends (?) you can do that too, now, as they are organized with their own special colour for your pleasure.
In addition, I think it would be nice if the action command (/me) would also colour the name, as well. That would be neat if it got fixed. Then when the spectator /np's a map and we see that nave blue colour, we know to get that map right away because the host is probably going to play it.
Plain white for yourself.
Blue for private messages
Beige for regular players
Gold for supporters
Red-orange for BATs MATs or anything else important staff to osu! etc etc
Cyan for peppy (DUH.)
Pink for BanchoBot
Green for highlight
But, with how much other special roles..?
Like Multiplayer room host, or someone on your friend list, or the player that's playing in a spectator room?
I honestly think they deserve their own colours too...
Perhaps we can have..
Navy blue for spectator room host
Purple for friends
Magenta for multiplayer host
I thought this wouldn't be too hard to implement, so.. why not?
This way, when there is a lot of spectators for a player, we can see at a glance what the host is talking about.
And also, if you only want to talk to your friends (?) you can do that too, now, as they are organized with their own special colour for your pleasure.
In addition, I think it would be nice if the action command (/me) would also colour the name, as well. That would be neat if it got fixed. Then when the spectator /np's a map and we see that nave blue colour, we know to get that map right away because the host is probably going to play it.
we will got a full colorful osu that will look so good :3
sharing the same colour 
what make it a bit harder to determine where and which one is it ?