Since version 1.40 pdfTeX supports colour stacks. The driver file pdftex.def for package color defines and uses a main colour stack since version v0.04b.

This package is intended for package writers. It defines macros for setting and maintaining new colour stacks.

The package is part of the oberdiek bundle.

The author is Heiko Oberdiek. The package is Copyright © 2007 Heiko Oberdiek.