[NTG-context] ConTeXt & color=red!40!yellow

Hello, I might be dreaming already, but on last Tuesday (I don't know which version though) this code kept generating orange balls in ConTeXt MKII: \shade[ball color=red!40!yellow] (0,0) circle (.15cm); Now I get a black one. Has anything with respect to color handling mechanisms changed in ConTeXt MKII or TikZ recently? ConTeXt MKIV properly generates an orange ball (usually only mkiv fails, so I'm a bit confused now :). I'm using ConTeXt 2009.03.30 18:28 and TikZ 2009-04-03. Thanks, Mojca ------- \usemodule[tikz] \setupcolors[state=start] \starttext \tikz\shade[ball color=red!40!yellow] (0,0) circle (.15cm); \stoptext