Setting backgroud color

I'm somewhat familiar with customization one can do with Visual Studio env. I've VS2010 Pro and used "Tools-> Options -> Environment -> Fonts and Colors" to set background color of my text editor. I was also able to change color for "Output" window (which shows output from your compilation). But I want to change the color setting for my "Call Hierarchy" window. (you get this window when you select "View Call Hierarchy" for a method/field.) How do I do that? I'm not sure if there is an option for it in Option's "Show settings for:" and if so what it is.

Thanks.