Much of Southern California was under red flag warnings for fire danger due to heat, wind and low humidity levels.

NPR: Wind-Fueled Wildfire Erupts East Of Los Angeles

Color, too, is used effectively, with text panels in red, for instance, denoting high danger and those in black symbolizing the cutoff of avenues of escape once World War II began.

WSJ: A Tortuous Road to Refuge | Against the Odds | Museum of Jewish Heritage | By Julia M. Klein

Where some see rest and relaxation, though, others see danger and an opportunity for red tape.

ECONOMIST: Red tape: The wood for the trees | The