[data-swatch]::before {
  background-color: rgba(var(--text-color) / 0.08);
}

[data-swatch="red"]:before { background-color:#ff0000}[data-swatch="light blue"]:before { background-color:#add8e6}[data-swatch="red blue stripes"]:before { background-image: linear-gradient(to bottom right, #e22, #e22 50%, #22e 50%, #22e) }[data-swatch="green"]:before { background-color:#008000}[data-swatch="blue"]:before { background-color:#0000ff}