\useregime[il1]
\enableregime[il1]
\useencoding[ffr]
\mainlanguage[fr]

\enableregime[windows]

\usetypescript[palatino][texnansi]
\setupbodyfont[palatino,rm,12pt]

\setuplayout
    [header=0pt,
    footer=0pt,
    backspace=1.5cm,
    width=middle,
    topspace=1cm,
    height=middle]

\startMPenvironment[global]
    \useregime[il1]
    \enableregime[il1]
    \useencoding[ffr]
    \mainlanguage[fr]
    \enableregime[windows]
\stopMPenvironment

\setupcolors[state=start]
\definecolor	[Gris]     [r=.86, g=.85, b=.54]
\definecolor	[Noir]     [r=0.0, g=0.0, b=0.0]

\definecolor	[Avant-titre]		[Noir]	% titre chapitres
\definecolor	[Fond-titre]		[Gris]	% titre second plan chapitres


\starttext

\startstandardmakeup
\vfill
    \midaligned{
        \switchtobodyfont[24pt]\blue{Where are the accent}
        \switchtobodyfont[12pt]\green{ gone?}}



\inright{\rotate[rotation=270]{Is that the}}

\blank[2cm]

    \startuseMPgraphic{Doubletitre}
        def SampleText (expr t, f, c) = draw t infont f scaled 5 withcolor c ;  enddef ;
        def BigText (expr t, f, c) = draw t infont f scaled 8 withcolor c ;  enddef ;
        BigText("Réponse ?","\truefontname{RegularSlanted}" , \MPcolor{Fond-titre}) ;  %R\'eponses not working
        SampleText("Réponse ?","\truefontname{Regular}" , \MPcolor{Avant-titre}) ;
        \stopuseMPgraphic
    \useMPgraphic{Doubletitre}
\vfill
\stopstandardmakeup


\chapter[chap:ques]{Question}

After the accent problem solved, I wish to implement such kind of graphic
effect/setup for headers like  chapters.



The goal is  to only write once \quote{Question} in \type{\chapter[chap:ques]{Question}}
for getting the same result than in the first page, or in below (\quote{shadowed} effect must only apply to text, not to header number).

\startuseMPgraphic{Doubletitre}
        def SampleText (expr t, f, c) = draw t infont f scaled 5 withcolor c ;  enddef ;
        def BigText (expr t, f, c) = draw t infont f scaled 8 withcolor c ;  enddef ;
        BigText("Question","\truefontname{RegularSlanted}" , \MPcolor{Fond-titre}) ;  %R\'eponses not working
        SampleText("Question","\truefontname{Regular}" , \MPcolor{Avant-titre}) ;
\stopuseMPgraphic
\useMPgraphic{Doubletitre}




\stoptext