//dark color
$color-dark: #000000, #333333, #666666, #999999, #cccccc, #e6e6e6, #f2f2f2,
  #ffffff;
//light color
$color-light: #ffffff, #f2f2f2, #e6e6e6, #cccccc, #999999, #666666, #333333,
  #000000;
//flat color
$color-flat: #1abc9c, #2ecc71, #27ae60, #3498db, #2980b9, #9b59b6, #8e44ad,
  #34495e, #2c3e50, #f1c40f, #f39c12, #e67e22, #d35400, #e74c3c, #c0392b,
  #ecf0f1, #bdc3c7, #95a5a6, #7f8c8d;