Reference for “CSS Color Module Level 3”

@TechReport{Baron:08:CCM,
  author      = "L. David Baron and Chris Lilley and Tantek \c{C}elik",
  title       = "{CSS} Color Module Level 3",
  month       = jul,
  note        = "http://www.w3.org/TR/2008/WD-css3-color-20080721",
  year        = "2008",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "Last Call {WD}",
  institution = "W3C",
}