how to print colored foils in bw?

Hi,

I want to print my colored slides in bw.  Somehow, I don't find the switch.
What do I miss.

Thank you very much,

Uli


my header, stolen from a texpower-demo

\documentclass[landscape,headrule,footrule,a4paper]{foils}

\usepackage{pp4slide}
\usepackage{texpause}

\usepackage{pause}

%------------------------------------
% The texpower package is loaded. 


%\usepackage[display,darkbackground]{texpower}
\usepackage{texpower}

\usepackage[german,english]{babel}
\usepackage[cp850,latin1]{inputenc}
%\usepackage[T1]{fontenc}
\usepackage{ae}
\usepackage{xspace}
\usepackage{soul}

\usepackage[pdfpagemode=FullScreen]{hyperref} % klappt nur mit pdflatex
%\usepackage{hyperref}

\usepackage{aufzaehlungen}
\usepackage{amsmath}
\usepackage{amssymb}

-- 
Ulrich Scholz

[email protected]
http://www.intellektik.informatik.tu-darmstadt.de/~scholz


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