[NTG-context] List head colour

Quick question. With "\startitemize[n][color=red]", "\item ..." gives me the item number in red, but "\head ..." gives me the item number in the default colour. With "\startitemize[n][headcolor=red]", "\head ..." gives me the whole line in red including the number. Is there any setup which can give me just the item number in red when using "\head ..."? Is it possible? Thanks all. Duncan