.red { color: red }
    .yellow { color: yellow }
    .blue { color: blue }
    .green { color: green }
    .orange { color: orange }
    .purple { color: purple }       
    .red-bg { background-color: red }
    .yellow-bg { background-color: yellow }
    .blue-bg { background-color: blue }
    .green-bg { background-color: green }
    .orange-bg { background-color: orange }
    .purple-bg { background-color: purple }