Setting the background color for the window that Office 2007 operates in (the bar going across the top of the screen that holds the name of the program and the "X" and minimize buttons) is another ...

Animated backgrounds are not available on low-end devices and require at least 8 GB RAM, CPU with 4 logical processors. Only pre-defined backgrounds from Microsoft are currently supported.

To change the background color, drag a color swatch from the color picker and drop it on the window. Repeat as necessary with varying colors until you have one you like.