Or, instead, try to picture yellowish blue — not green, but a hue similar to both yellow and blue. Is your mind drawing a blank? That's because, even though those colors exist, you've probably ...

Additionally, shades like blue and gray foster a sense of calm — an ideal state for making intelligent decisions. Very vibrant colors like yellow and lime green, while cheerful, can provoke ...

These glowing spheres can be white, yellow ... sprites dancing above thunderstorms in the late '80s and early '90s. The leading culprit behind elves and sprites is positive lightning. Blue ...