[NTG-context] transparent colors in latest beta

Hi Hans, the bad news is that transparent colors don't work at all in the latest beta with mkiv (they worked on and off with the beta before that). The good news is that this makes it easier to build a minimal example :-) Here comes: \setupcolors[state=start] \starttext \startuseMPgraphic{test} pair a, b, c, d ; a = (0,0) ; b = (0,5cm) ; c = (5cm,5cm) ; d = (5cm,0) ; path p ; p = a -- b -- c -- d -- cycle ; draw a -- c withcolor black ; fill p withcolor transparent (1,0.25,red) ; \stopuseMPgraphic \useMPgraphic{test} \stoptext All best Thomas