^are you sure? I always remember Sayu talking about how lazy she is to dye her hair and taking pride in the fact that she has beautiful natural black hair.
Yep, from way back in 2009:
090826 KonUsaPi #147
Sayu went to the hair salon recently after realising her hair was turning brown. She hates visiting the hair salon because she had several reluctant conversations with the hairdressers whenever she went there. As one who hates going there, the last time she went there was nearly 4 months ago. This recent visit made Sayu hate hair salons even more. Before undergoing the hair treatments, she had her hair washed by the hairdresser. The hair salon that she went to does not put on a towel to protect their customers' eyes from the shampoo so Sayu decided to close her eyes to prevent the shampoo from going into her eyes. As the hairdresser was washing her hair, Sayu heard "Are you going to work after this?" so she answered yes. But...the question was actually directed to another customer who was getting his/her hair washed. Before the visit, Sayu had made mental preparations for what to answer if the hairdressers ask her something so when she heard that question, she gave a full-of-energy "Yes!" Her hairdresser didn't know how to respond to her too. Alone and embarrassed, Sayu couldn't wait to share with all the listeners about this to lighten her embarrassment. Although it was her fault for being answering to a wrong question, this experience increased her hatred for hair salons.
Credit: OnDiet
While not specifically saying she dyed it, the fact she had pride in her black hair and the realization that it was turning brown was enough to make her go to the salon, which she hates doing, because of that, pretty much confirms that she went to dye it back to black.
---------------
From the latest Morning Diary:
Yokoyama, Chel, and Akane-chin wish Sayu a Happy B-day.
Yokoyama talks about her looking you and how she has good style.
Chel talks about her like not being human, that she's like and android and looks like a doll.
While Akane-chin says she looks like she's about 16.
*crickets*... oh poo on you all lol
