[NTG-context] background color for makeups

Dear list, the only way I found to center content horizontally and vertically on a page is a makeup, such as: \startstandardmakeup[align=middle] content to be centered \stopstandardmakeup I need to be able to change the background on some given pages. Which is the way to do this? I have tried with (what I understand from) setups: \startsetups[setups:redcolor] \setupbackgrounds[page][background=color,backgroundcolor=red] \stopsetups \startstandardmakeup[setups=setups:redcolor] content \stopstandardmakeup But it didn't work. Could you help me with this? Many thanks for your help, Pablo -- http://www.ousia.tk