Custom Opened Program Folder?

[DPr00f]

Hello, i've been hitting the web for some time now.
What i can't find is how to change the taskbar opened program highlight icon.
I hope you know what i'm talking about, those squares around the icons that you can see on the image.

Can some one tell me where to look? Thanks in advance.

 

[Bongo]

Welcome to the Seven Forums
That is in the aero.msstyle in C:\Windows\Resources\Themes\Aero you need Ave's Windows7 Style Builder
Or
Restorator - Bome Software - Restorator - the resource editor for customization, localization, and translation.

If you are using the stock Aero theme I can do it for you If it's a custom theme you need to ask the maker.
Jerry

Will check back in the AM