\starttext

    \starttabulate[||CL{darkred}|CM{darkgreen}CT{white}|CR{darkblue}||]
        \NC first \NC               left  \NC middle \NC               right  \NC last \NC \NR
        \NC first \NC \color[white]{left} \NC middle \NC \color[white]{right} \NC last \NC \NR
        \NC first \NC               left  \NC middle \NC               right  \NC last \NC \NR
    \stoptabulate

\stoptext
