Problem with themed taskbar

Hello there

So i have a problem with setting a custom image as taskbar background in Windows Style Builder.
I did everything well, but after testing the theme, i got this:

As you can see, the image i used to change in the msstyle only covers the tray and the start button area, and i have no idea why...

Also i have a second question: Is there a way to make the taskbar all transparent? I mean, i tried inserting a transparent background (see pic), but in the alpha area i can see a colored background.

Using Windows 8.1

Any help would be appriciated and thanks in advance

In Windows Style Builder there is more than one area to change the look of the taskbar, you probably missed one.

There are some real good Windows Style Builder tutorials over at Virtual Customs.
The tutorials are based on Windows 7 but it is still basically the same even though your using 8.1 .
It helped me immensely when I was first learning how to use it.