[R] grey scale graphs

[Sebastián Daza]

Hi everyone,
Does anyone know how to get "black and white theme" (grey scale,, I 
would say) graphs using lattice or ggplot2, as it is shown in this 
webpage: http://lmdvr.r-forge.r-project.org/figures/figures.html?

I am using Sweave, and I cannot get that color configuration.
I have added the following option: trellis.device(color=FALSE) but I got 
a pdf file with color graphs.

Thank in advance.
-- 
Sebastián Daza
sebastian.daza at gmail.com