[NTG-context] footnote coloring

I want to color all elements of a footnote, but I cannot find how to do this. Minimal example: \def\rednumber#1{\color[red]{#1}} \starttext \setupfootnotes[textcolor=red,numbercommand=\rednumber,foregroundcolor=red] This text\footnote{the footnote} contains a footnote. \stoptext The footnotenumber in the text is the only element that gets colored because of the [textcolor=red] parameter setting. In the command reference it is [numbercommand=\rednumber]. Shouldn't that have made the color of the footnotenumber below? Since \setupfootnotes inherits from setupframed I expected [foregroundcolor=red] to do the trick for the content of the footnote, but it doesn't. How to? Hans van der Meer