How to change windows prgoress bar to red

how do i change my windows 7 prgoress bar to red or is that not possible

I think there is a link to change just the progress bar to red... I think. I just ducked((?) I tried coining a new term for searching via DuckDuckGo; Google has "googled") around a bit and followed a threads to a few links and eventually stumbled upon this:

http://forums.mydigitallife.info/threads/12713-Windows-7-Theme-amp-Resource-Mods

i have tried this and it does not work is there any other way to do it?

 

What is a prgoress bar?

like when things are loading :P