[NTG-context] colored column

Hallo, can someone explain how to write a table column in color, please? The following example worked in 2006 but is not working anymore: \starttext \starttable[o1|\{C{red}|] \VL red \VL\SR \stoptable \stoptext Wolfgang Schuster posted last year the following example: \NewFormatKey W#1% {\ReadFormatKeys b{\localstartcolor[#1]\{} a{\}\localstopcolor}} \starttable[o1|W{red}c|] \VL red \VL\SR \stoptable But this results in printing '{red}' in red, not 'red'! And this variant paints the following vertical line in red too: \NewFormatKey W#1% {\ReadFormatKeys b{\localstartcolor[#1]} a{\localstopcolor}} \starttable[o1|W{red}c|] \VL red \VL\SR \stoptable So, how can I do the job? Wolfgang