Restaurants in Chinatown are a good place for gouache painting if you catch them in the middle of the afternoon. You can hold down a table for a while and the cooks come out to eat. They always seem to eat cool stuff that's not on the menu.
The white of the chefs' outfits captures the colors of the light sources. There's a backlit photo panel pumping green light from behind them, a yellow-orange incandescent source from off to the right, and some bluish window light filling from behind me.
I'm in New York City to drop off a new painting at Scientific American, and I'll tell you more about that when the April issue comes along.