Hi Hans, To progress in the use of Metafun, I try to do the same cover page as your document 'Metafun ". Without looking at the code (but using the definitions of your colors), I managed to get the mosaic. I would write the word "MATHÉMATIQUES" as you did with the word "CONTEXTEN". Thank you, Fabrice \setuppagenumbering[location=] \setupcolors [state=start] \definecolor[maincolor][g=.6] \definecolor[pagecolor][s=.6] \definecolor[darkcolor][s=.2] \definecolor[textcolor][r=.6] \startMPinclusions color maincolor ; maincolor := \MPcolor{maincolor} ; color pagecolor ; pagecolor := \MPcolor{pagecolor} ; color darkcolor ; darkcolor := \MPcolor{darkcolor} ; color textcolor ; textcolor := \MPcolor{textcolor} ; \stopMPinclusions \startuseMPgraphic{CoverPage} path p ; p := OverlayBox xyscaled (1/2,1/7) ; fill OverlayBox withcolor pagecolor ; path q ; q := p enlarged -12pt randomized 12pt ; pair a ; for j=0 upto 6 : for i=0 upto 1 : a := (i*xpart urcorner p,j*ypart urcorner p) ; q := p enlarged -12pt randomized 12pt shifted a ; circular_shade (q, ceiling(uniformdeviate 4), maincolor, .5maincolor) ; draw q withpen pencircle scaled 8pt withcolor darkcolor ; endfor ; endfor ; \stopuseMPgraphic \defineoverlay[CoverPage][\useMPgraphic{CoverPage}] \setupbackgrounds [rightpage] [background=CoverPage] \starttext \stoptext