Random Hex Color

/**
   
       * Get random color hex value
   
       *
   
       * @param integer $max_r Maximum value for the red color
   
       * @param integer $max_g Maximum value for the green color
   
       * @param integer $max_b Maximum value for the blue color
   
       * @return string
  
       */
   function getRandomColorHex($max_r = 255, $max_g = 255, $max_b = 255)
  
      {
  
          // ensure that values are in the range between 0 and 255
  
          if ($max_r > 255) { $max_r = 255; }
  
          if ($max_g > 255) { $max_g = 255; }
  
          if ($max_b > 255) { $max_b = 255; }
  
          if ($max_r < 0) { $max_r = 0; }
 
          if ($max_g < 0) { $max_g = 0; }
  
          if ($max_b < 0) { $max_b = 0; }
  
         
  
          // generate and return the random color
  
          echo '#' . dechex(rand(0, 255)) . dechex(rand(0, 255)) . dechex(rand(0, 255));
  
      }