Light yellow tends to disappear into white, so it usually needs a dark color to highlight it. Shades of yellow are visually unappealing because they loose cheerfulness and become dingy. Dull (dingy) yellow represents caution, decay, sickness, and jealousy. Light yellow is associated with intellect, freshness, and joy.
The definition of a frown is a facial expression indicating displeasure by drawing the brows together and turning the lips downward. An example of frown is the face you make when you are unhappy about something.
Facial Muscle Contractions. Lines between your eyebrows (frown lines) and lines jutting from the corner of your eyes (crow's-feet) are thought to result from facial muscle contractions. Smiling, frowning, squinting and other habitual facial expressions cause these wrinkles to become more prominent.