#digraphs .Xz {color: #D00} /* proposed */
.Lm, .Mc, .Me, .Zl, .Zp {background: #F00} /* unstyled */
+.X > span {background: #888} /* invisible contents */
/* letter scripts */
.Armenian,
.Mn {background: #ACC} /* modifier */
.Cc, .Cf {color: #666; background: #BBB} /* control */
.Zs {background: #ACB} /* space */
-.Zs span {background: #EEE}
.Co {background: #DCC} /* private */
.Xi, .Cs {background: #CCC} /* invalid */
.Xd {color: #844} /* deprecated */
/* hover effects */
.u-di,
.X:hover {cursor: help}
+.X:hover > span {background: #FFF} /* whitespace marker */
.Greek:hover, .Armenian:hover {background: #FA8}
.Cyrillic:hover {background: #FB7}
.Latin:hover {background: #EE4}