header
    color #f00 + 50lt - 40sat
    color #f00 + 20lt - 40sat
article
    color #000 + 20r + 20b - 255g + 240g
body
    color #fff + 255b + 255g + 255r
    color #000 + 255b + 255g + 255r
    color #111 + 255b + 255g + 255r
html
    color purple
    color yellow
    color green