with the environment of

\startMPcode
you can scale a color with a factor like
0.25red and 0.5blue

But this not seem to work when you define a color yourself first

definecolor [ name = "MyColor", r = .5, g = .25, b = .25 ] ;
fill fullsquare xyscaled (40mm, 15mm) withcolor "MyColor" ;

fill fullsquare xyscaled (40mm, 15mm) shifted (42mm, 0mm) withcolor 0.5"MyColor" ;



What would be the correct way to scale self defined colors?

.F

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