Brian Mansfield from IdolChatter published at Boston.com, is blogging heavily about the Idols/Adam.
Recently he approached Adam’s physiology a bit closer…

Hair
Adam has blue highlights in his jet-black hair. They weren’t always noticeable under televison lights, but they’re very apparent when meeting him in person. “They’re a little punched up now from where they were,” he says. “The inspiration was one of those black feathers, you know, that are kind of iridescent? I took that to my hairdressers and said, ‘Make my hair look like that!’”

Tatoo
It’s inside Adam’s right wrist – the Eye of Horus, and Eqyptian heiroglyph symbolizing protection.

It’s like an evil eye.

He got it after he made the Top 36.

“A close friend who has lots of tattoos dragged me in. Right after the New York press circuit, I went and had additions put on to it — put more color, put extra lines into it. In a way, it’s cool, because it kind of completes my experience.”

Colors

These are my colors. I love these colors — turquoises, blues and greens.

In another article Bian Mansfield approaches Adam’s album by 19/RCA. First point to clarify is that RedOne doesn’t produce Adam’s debut album, but

He’s producing tracks on my album and writing with me, as well.
Before, I was doing the lyrics and the melody more on my own, with somebody that was creating the tracks. This is a situation where I’m co-writing everything, melodically and lyrically. I actually prefer it. I feel more secure with somebody else to bounce ideas off of, and then we kind of share, throw the ball back and forth and come up with a finished product. I work better like that. I’m so happy to be working with top-line people, the best. And these producers are bringing in top-line writers that they know to help.

The sound of music
Adam describes his new sound as having elements of classic rock and electronic music.

There’s a lot of anthems. You know how We Will Rock You by Queen is an anthem that you can put in stadiums and people will sing along to it? There’s a lot of that on the record so far. A lot of power-anthemy, sing-along stuff.
I think people are going to be pleasantly surprised, but it’s not going to be what they heard on the show.
He gives Born To Be Wild as the comparison to the possible sound… exciting!