% post by WS on dev list

\setuppagenumbering
  [alternative=doublesided]

\setuphead
  [chapter]
  [page={yes,right,blank}]

\setupbackgrounds
  [page]
  [background=color,
   backgroundcolor=green]

\starttext

    \dorecurse {2} {
        \chapter{Chapter \convertnumber{word}{#1}}
        \dorecurse {10} {
            \input knuth\par
        }
    }

\stoptext
