[NTG-context] [***SPAM***] Changing the font of the TOC-Title

Hello, I know, that I can change the TOC-Title by \setupheadtext[content=Whatever the TOC-Title may be] How can I change the Font of the TOC-Title, is there a style key, or somewhat like that? (Directly "\setupheadtext[content=Whatever the TOC-Title may be, style=Chapterstyle]" does not work, where "Chapterstyle" is a defined Font) Huseyin