Shaded table cells 

Date:          Wed, Dec 11 1996 12:00 am
Groups:        comp.text.tex
> Is it possible to shade the background of individual
> cells of a table, ideally with differing gray levels?

Look at David Carlisle's colortbl.sty (on CTAN in macros/latex/contrib/supported/carlisle). It'll also sing and dance for you.

Shaded table cells 

colortbl or colortab packages on ctan. (I prefer the former, but may be biased)

David Carlisle