gistfile1.php

// css 2.1 color

$regex = '(?:(?:#[0-9a-fA-F]{3})|(?:#[0-9a-zA-Z]{6})|(?:rgb\((?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-2][0-5]{2}|[0-1][0-9]{0,2})(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*,(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-2][0-5]{2}|[0-1][0-9]{0,2})(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*,(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-2][0-5]{2}|[0-1][0-9]{0,2})(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*\))|(?:rgb\((?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-9]{1,3}|0)%(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*,(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-9]{1,3}|0)%(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*,(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*(?:[0-9]{1,3}|0)%(?:\s*(?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)*\s*)*\))|(?:Black|Silver|Gray|White|Maroon|Red|Purple|Fuchsia|Green|Lime|Olive|Yellow|Navy|Blue|Teal|Aqua)|(?:Orange)|(?:aliceblue|antiquewhite|aqua|aquamarine|azure|beige|bisque|black|blanchedalmond|blue|blueviolet|brass|brown|burlywood|cadetblue|chartreuse|chocolate|coolcopper|copper|coral|cornflower|cornflowerblue|cornsilk|crimson|cyan|darkblue|darkbrown|darkcyan|darkgoldenrod|darkgray|darkgreen|darkkhaki|darkmagenta|darkolivegreen|darkorange|darkorchid|darkred|darksalmon|darkseagreen|darkslateblue|darkslategray|darkturquoise|darkviolet|deeppink|deepskyblue|dimgray|dodgerblue|feldsper|firebrick|floralwhite|forestgreen|fuchsia|gainsboro|ghostwhite|gold|goldenrod|gray|green|greenyellow|honeydew|hotpink|indianred|indigo|ivory|khaki|lavender|lavenderblush|lawngreen|lemonchiffon|lightblue|lightcoral|lightcyan|lightgoldenrodyellow|lightgreen|lightgrey|lightpink|lightsalmon|lightseagreen|lightskyblue|lightslategray|lightsteelblue|lightyellow|lime|limegreen|linen|magenta|maroon|mediumaquamarine|mediumblue|mediumorchid|mediumpurple|mediumseagreen|mediumslateblue|mediumspringgreen|mediumturquoise|mediumvioletred|midnightblue|mintcream|mistyrose|moccasin|navajowhite|navy|oldlace|olive|olivedrab|orange|orangered|orchid|palegoldenrod|palegreen|paleturquoise|palevioletred|papayawhip|peachpuff|peru|pink|plum|powderblue|purple|red|richblue|rosybrown|royalblue|saddlebrown|salmon|sandybrown|seagreen|seashell|sienna|silver|skyblue|slateblue|slategray|snow|springgreen|steelblue|tan|teal|thistle|tomato|turquoise|violet|wheat|white|whitesmoke|yellow|yellowgreen)|(?:Background|Window|WindowText|WindowFrame|ActiveBorder|InactiveBorder|ActiveCaption|InactiveCaption|CaptionText|InactiveCaptionText|Scrollbar|AppWorkspace|Highlight|HighlightText|GrayText|Menu|MenuText|ButtonFace|ButtonText|ButtonHighlight|ButtonShadow|ThreeDFace|ThreeDHighlight|ThreeDShadow|ThreeDLightShadow|ThreeDDarkShadow|InfoText|InfoBackground))';