[NTG-context] Columns and colour background

Dear folks, consider this: --- \setupcolors [state=start] \setupcolumns [background=color, backgroundcolor=red] \starttext \startcolumns[n=2] \dorecurse{4}{\input tufte} \stopcolumns \framed[background=color,backgroundcolor=red]{Test} \stoptext --- Shouldn't the background of my columns be painted red? According to the manual \setupcolumns inherits from \setupframed which does work ... Oliver