...

---------------------------------------------------------------- \setupcolors[state=start] \newcounter\V \def\Vers#1{\increment\V {\color[darkgreen]\rm\bi \V} #1}

\def\Vers#1{\increment\V \dontleavehmode{\color[darkgreen]\rm\bi \V} #1}

but i think this is better

\setupcolors[state=start]

\definelabel [Vers] [headstyle=bolditalic, headcolor=darkgreen, command=\groupedcommand\dontleavehmode\space]

\starttext \startcolumns text\par\dorecurse{50}{\Vers Dies ist ein Testsatz der gerade lange genug ist, um zu zeigen was zu zeigen ist.\par} \stopcolumns \stoptext

Thank you very much! Wolfgang