Am 10.06.2012 um 18:56 schrieb Alfredo Catalina:

1. Do you use MkII or MkIV?

2. Do you want Palatino only for the metapost labels or also for the main font in the document? 

 I am using MkIV. Whether it is possible I would like to use a different font for the metapost labels.

\setupbodyfont[pagella,11pt]

%\setupMPinstance[metafun][textstyle=sans]
\setupMPinstance[metafun][textstyle={\switchtobodyfont[termes,14pt]}]

\starttext

\input knuth

\startMPcode
draw textext("I’m different!") ;
\stopMPcode

\stoptext

Wolfgang