3. Noir: Oh, how sophisticated — now we're talking colors in French. This swanky lounge at the Charles Hotel is a great way to wind down the night in style. The website says it all: "Desire, intrigue, cocktails." Ooh la la. 1 Bennett St., Cambridge, 617-661-8010. noir-bar.com
Prep work: See a map of the Colorful Date suggestions.
(Evan Richman / Globe Staff)