You can adjust the background theme for Office to suit your work style. If you want a higher contrast background, or prefer a darker framework, you can make a quick change to Office.
All you need to do is click on File -> Options -> Personalise your copy of Microsoft Office. Click on the drop down box for Office Themes. You have a couple of choices, but Black offers the highest contrast. It'll look like this: It's not to everyone's taste, but if you are working in a really bright office, the dark theme is a bit easier on the eyes. You can quickly switch it back if you don't like it.