Hi, With the latest ConTeXt (05.14) and XeTeX (0.992), I can successfully run this file (xetexmp.tex): \setupcolors[state=start] \runMPgraphicstrue \starttext \startMPcode for i = 1 upto 100: j := 200-(2*i); fill fullcircle scaled (j*pt) withcolor (0.5+i/200)*green; endfor \stopMPcode \stoptext using this command: texexec --xtx --nobackend xetexmp Greetings, Taco