[NTG-context] strange behaviour of colors

Hello, In the following example, the title color changes on the second page. How can I avoid that? I can probably switch the cmyk/rgb colors off, but I would like to keep them as rgb/cmyk if possible. \setupcolors[state=start] \setuphead[title][page=yes,color=blue] \starttext \title{first page} some text \title{second page} The title color has changed. \definecolor [transparentred] [r=1,t=.5,a=1] \blackrule[width=2cm,height=2cm,color=transparentred] \stoptext Thank you, Mojca