Does Word's editing screen, with black text on a white background, give you eyestrain? Why not change it to a more relaxing blue background with white letters?
This is an attractive setup for former users of WordPerfect 5.1 (many of us are still around) who miss their old word processor.
Just select Tools-Options, then click the General tab in the Options dialogue box. Click Blue background, white text to turn on that feature, then click OK. This works in all versions of Word from Word 6.0 to Word 2000.