*
 */
/**
 * Return a greyscale color based on $context--greyscale-base
 *
 * @param {Integer} $val - lightness value between $context--greyscale-min and $context--greyscale-max
 * @param {Float} $opacity - opacity value between 0.1 and 1, to one decimal place
 *
 */
/**
 * Return a color from a color palette
 *
 * @param {String} $name - name of the color to insert
 * @param {Arglist} $keys - 0 to 2 paramaters defining map and opacity
 *
 */
/**
 * Returns either a dark or light foreground color when given