         Detemine the distance between two colors based on the way humans perceive them.
         Uses the Sharma 2004 alteration of the CIEDE2000 algorithm.
      
-        - parameter compareColor: A UIColor to compare.
+        - parameter compare color: A UIColor to compare.
      
         - returns: A CGFloat representing the deltaE
     */

    /**
        Determine if this colors is darker than the compared color based on the relative luminosity of both colors.
     
        - parameter compareColor: A UIColor to compare.
     
        - returns: A boolean: true if this colors is darker than the compared color and false if otherwise.
    */

        Get a new color with a mask screen blend mode on top of this color.
        This is similar to Photoshop's screen blend mode.
     
        - parameter with color: A UIColor to apply as a screen mask on top.
     
        - returns: A UIColor with the applied screen blend mode.
    */
