Customizing pop up background color with IE7 open popups in new tab setting

I have a pop up on my page that I want to have a white background if it is opened in a new tab according to the user's settings in IE7 to open pop ups in new tabs. Is it possible to customize this, or am I stuck with a black background. Also, can I set the position of the pop up if it is opened in a new tab.
For instance, if the pop up if opened in a new tab, I would like for it to be centered on the page with a white background.

From stackoverflow

• You can't read the user's settings - that's a serious security violation and browsers deliberately prevent access to this information.