Yep. She wore it during that whole run.
I think there were also plans to bring in Alex, Joe, Vic and Sonny (back then he was still just Jackson), but with the writer's strike and Hogan Sheffer's departure, those plans were ended.
I believe when Adrienne was brought back in 2007 after Bonnie Lockhart departed town they made Judi Evans wear a darker wig. I don't know if she wore it the entire run, but I seem to recall her donning darker hair during some sort of kidnapping.