One of the best and most underused features of WindowBlinds 6 is the colorizing feature.

With WindowBlinds, you can color certain parts of the skin but not others in order to create multiple new styles that you can save for later.

Here are two screenshots to show what I mean:

Above is Elegance but with a more golden hue to it. Note that the close button is still red. It's not just a brute force hue shift.

Here is Aero Executive changed to be grassy.