How come I'm back in the old design

Hi,
First, I like the new look.
I was going the post a new question and I wasn't recognized as a registered user so I entered my user name and password.
Now I'm back in the old site, e.g. yellow and gray.
What happened?
Thanks,
Al.

I think you posted in the developer's codebook which is hosted by vbSquare (Yellow & gray) or that's in your options/profile. You can change that by going into the user control panel.

Thank you.
It was in the user control panel.
Al.