Change the way active/open taskbar icons look in Windows 7

[ohaiman]

How do I change the way active/open taskbar icons look? I want to get rid of the blurred box around the icons and have a different effect such as a small indicator light under them to let me know they're open. Is that possible?

 

[despuit]

I use classic theme though that sounds like a great idea... I doubt this can be done via any ico file or what have you. Would require a custom theme or third party application. I found another thread on here that asked the question. This is apparently controlled by DWM, and the closest thing you can do is a use a coloured theme and the blur will be a different shade of what ever colour you chose. The last thread was in mention of modifying the contrast here: http://www.sevenforums.com/customization/131698-how-change-colors-icons-taskbar.html