\startTEXpage[offset=overlay,toffset=.5pt,boffset=.5pt,background=color,backgroundcolor=gray]
    \definedfont[LMTypewriterVarWd-Regular]%
    \darkred    e%
    \darkgreen  r%
    \darkblue   r%
    \darkyellow o%
    \darkgray   r%
\stopTEXpage
