Johansson`s tattoo has a secret message

London: Hollywood actress Scarlett Johansson says her sunrise tattoo has a secret message but she doesn`t want to reveal its meaning -- because it`s private. "I`ve had the tattoo of a sunrise on my arm for a while. It makes me happy when I look at it, but the reason I had it done is very personal. Some things have to remain private," contactmusic.com quoted her as saying.

The 25-year-old loves experimenting with new looks. She was thrilled when she had to dye her hair red for her role as a Russian spy in `Iron Man 2` in which she stars alongside Gwyneth Paltrow, Robert Downey Jr and Mickey Rourke. "I play Black Widow in `Iron Man 2` and I had to dye my hair red to audition, which I loved. When I met the producers the second time I still had red hair because I was hoping they`d cast me, but also because I was experimenting with my hair colour," she added. IANS