Window and Start Menu Colors change, but not the Taskbar

I have Windows Business at work and Home Premium at home. At home when I
right click on the desktop and choose Properties and open the Window Color
and Appearance, I am able to get the taskbar, start menu, and window borders
to change colors. Let me say that all three have an obvious color
change...the taskbar isn't darker than the start menu and window color.

On Vista Business, if I go through the same procedure the start menu and
window colors change. The task bar does not. I have changed the color
intensity to see if I can see any change in color in the taskbar. The color
just does not change.

Is there a way to get the taskbar to change color in Vista Business? I
didn't have to do anything special at home...I would think the functionality
would be the same on Business as Home Premium??