The package lets you shade or colour the cells in the alignment environments such as \halign and LaTeX’s tabular and array environments.

The package is to be preferred today with LaTeX (it assures compatibility with the package, which is no longer true with colortab); another modern option is the table-colouring option of the . However, colortab remains an adequate solution for use with Plain TeX.

The authors are Timothy Van Zandt and Herbert Voß. The package is Copyright © 1993,2010 Timothy Van Zandt.