The background color is inspired by International Klein Blue, a hue that the artist Yves Klein first mixed in the 1950s, using it to make an array of monochromatic paintings until his death in 1962.

With nationalism ascendant and Catholics outnumbering Protestants, green was widely embraced, particularly since it had been ...

Classifying workers by the color of their shirts ... the required educational background, the job responsibilities, and types of compensation (hourly vs. salary). Blue collar employees often ...