she said that she didn't want to BECOME a gimmick meaning she doesn't want to feel like she can't make music without making a fashion statement. She never said there was anything wrong with switching her hair color or even making a fashion statement, but that that it isn't always necessary. If she were a gimmick, her music would ALWAYS have to be accompanied with a 'new look'.
This is a ki...she's doing the back to basics type move
She said herself that she went back to her natural color because she didnt have anything left to do(without pulling a Early TD era Katy or Nicki Minaj move)...
I remember Alicia Keys shaded her about changing her hair color every era in that one interview
Alicia's interview came out way before Rihanna died her hair red so you fail as always.
Rihanna is sooo funny, when you have a feeling a certain album is over gimmicky, it's not until the era is over, then the album is gimmicky sneaky bitch
But it is though. 
"Get some sleep," she is such a cryptic genius 
If I were you I'll take the King's advice: This is for them bitter somethings stop living in regret, It's not over Yet...
it's not a new look, it's going back to her old look....I don't even know what's so complicated about that
Rihanna is sooo funny, when you have a feeling a certain album is over gimmicky, it's not until the era is over, then the album is gimmicky sneaky bitch