itemize + color question

["Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>]

Dear gang,

This seems like a very easy one, but I can't figure it out: on my  
slides, I want numbered itemizations to appear item by item, and I  
want the previous items to be "greyed out." I think this can only be  
done by combining two itemize environments. This is what I tried:


\setupitemize[1][n,packed,joinedup]

\startitemize[color=darkgray]

\item \color[darkgray]{one}

\stopitemize

\startitemize[color=white][continue]

\item two

\stopitemize

But the switches color=something and continue seem to exclude each  
other: either I get a continued item numbered "2," but in grey, or I  
get a white item number "1". There must be some obvious mistake, but  
where?

Thanks, and best

Thomas