html

body
  .ui-icon, .ui-widget-content .ui-icon, .ui-widget-header .ui-icon
    background-image: url("/assets/images/ui-icons_444444_256x240.png")

  .ui-state-hover .ui-icon, .ui-state-focus .ui-icon
    background-image: url("/assets/images/ui-icons_555555_256x240.png")

  .ui-button
    &:hover .ui-icon, &:focus .ui-icon
      background-image: url("/assets/images/ui-icons_555555_256x240.png")

  .ui-state-active .ui-icon, .ui-button:active .ui-icon
    background-image: url("/assets/images/ui-icons_ffffff_256x240.png")

  .ui-state-highlight .ui-icon, .ui-button .ui-state-highlight.ui-icon
    background-image: url("/assets/images/ui-icons_777620_256x240.png")

  .ui-state-error .ui-icon, .ui-state-error-text .ui-icon
    background-image: url("/assets/images/ui-icons_cc0000_256x240.png")

  .ui-button .ui-icon
    background-image: url("/assets/images/ui-icons_777777_256x240.png")