This will make sense when you get to the tutorial. http://www.sevenforums.com/tutorials/282-window-color-appearance-change.html
This is not exactly what you were looking for but..... when you get to the color selection(picture below) Step #5 in the tutorial I tried some different settings on my computer. Select "Enable Transparency". Then select the gold second from right top. Then move slider to right to between 70-90%.
The icons in the Taskbar POP out at you compared to what they were. Gold worked best for me but select and try any other color and use the slider to chose a color saturation. I'm leaving mine like I described above. Much easier to see. Red worked well also. Picture below.
Click "Save Changes" when your done.
I could not find this earlier. It isn't what you wanted exactly but might help. It did me.