gnome-shell/data/theme/gnome-shell-sass/widgets/_misc.scss

// Links/URLs
.shell-link {
  color: $link_color;
  &:hover { color: lighten($link_color,10%); }
}

.url-highlighter { link-color: $link_color; }

// Rubberband for select-area screenshots
.select-area-rubberband {
  background-color: transparentize($selected_bg_color,0.7);
  border: 1px solid $selected_bg_color;
}

// Pointer accessibility notifications
.pie-timer {
  width: 60px;
  height: 60px;
  -pie-border-width: 3px;
  -pie-border-color: $selected_bg_color;
  -pie-background-color: lighten(transparentize($selected_bg_color, 0.7), 40%);
}

// Screen zoom/Magnifier
.magnifier-zoom-region {
  border: 2px solid $selected_bg_color;
  &.full-screen { border-width: 0; }
}

// User icon
.user-icon {
  background-size: contain;
  color: $osd_fg_color;
  border-radius: 99px;
  &:hover {
    color: lighten($osd_fg_color,30%);
  }
}

// Input Source Switcher
.input-source-switcher-symbol {
  font-size: 34pt;
  width: 96px;
  height: 96px;
}

// Window cycler highlight
.cycler-highlight {
  border: 5px solid $selected_bg_color;
}

// Text
.headline { @include fontsize($base_font_size + 1); }
.lightbox { background-color: black; }
.flashspot { background-color: white; }


// Hidden
.hidden { color: rgba(0,0,0,0);}