I STRONGLY disagree.
The "@" looks sloppy and just clashes with the whole tag in my opinion.
I tend to make some very high quality threads and if I wanted to give credits to someone in a thread or mention them or something, I don't want the "@" there.
If the "@" is removed, it could simply be typed in.
Where as if we want to remove it, there is no way unless we make it look like shit.
EXAMPLE: Dang,@"PedoBear" is cool.
To me, removing the "@" via means of using "[/ color]" just makes it look bad.