I think I did mistype. I was tired
When I modify the windows default elements I don't like to just delete them (which can make things funky with the Titlebar). So I usually delete their style, and then set backgroundopacity to 0, and for the background I just delete the style. When I was talking opacities, I was just thinking about the wrong part of the window in my previous post.
Again though, I forgot my examine window still has the titlebar there, it's just not styled.
Soo....
Simply edit the Bkg in the WindowFrame to have:
RStyleDefault of "/WindowElements.WindowFrame.data.bkg.rect"
If you do it in UI builder, and you paste the style in, it will be too long. So double click the text RStyleDefault so you get the big edit box.
That'll give the blue background, but you'll have to resize it to fit the window.