You can disable the blur effect in:
Edit start menu and Taskbar----then for each section, IE: top part bottom bar, programs, places, at the bottom under extra settings, change from blur to your choosinAlthough, you may have to uncheck the alpha settings. From the image, looks like the glass is blurred on the left, but not the right.Very hard to know exactly what you have changed without the wba to look at.Were these images transparent before you tinkered with them?
So, try anyway to uncheck the alpha box and change the blurr to semitransparent where I described above.
If you altered the images, could take more to correct depending what you may have changed. 
