@background1: #fff;
@background2: #ddd;
@background3: #bbb;
@background4: #999;

@foreground1: #000;
@foreground2: #222;
@foreground3: #444;
@foreground4: #666;

body {
  color: @foreground1;
  background-color: @background1;
}

a {
  color: @foreground2;
  &:hover {
    color: @foreground4;
  }
  &:visited {
    color: @foreground3;
  }
}