Season 2 episode 10 title

Ok, why are people changing "Northwest Mansion Noir" back to "Northwest Mansion Mystery"? I already brought the correct title, from an official source, to attention, and someone even started changing the title where it appeared on other pages to match the update. So why do I see it changed back to "Mystery"? The official source says "Noir" and, believe it or not, Alex Hirsch maaaaay have made a mistake in the tweet.