Bug, css color brown

[AzaToth]

dont know if the errors are this site specific or forum specific...

Errors
URI : http://www.simplemachines.org/community/index.php?topic=53733.new

    * Line: 240

      Invalid number : color brown is not a color value : brown
    * Line: 240

      Invalid number : color brown is not a color value : brown
    * Line: 240

      Invalid number : color brown is not a color value : brown
    * Line: 240

      Invalid number : color brown is not a color value : brown
    * Line: 240

      Invalid number : color brown is not a color value : brown
    * Line: 527

      Invalid number : color brown is not a color value : brown
    * Line: 527

      Invalid number : color brown is not a color value : brown
    * Line: 527

      Invalid number : color brown is not a color value : brown
    * Line: 527

      Invalid number : color brown is not a color value : brown
    * Line: 527

      Invalid number : color brown is not a color value : brown
    * Line: 749

      Invalid number : color brown is not a color value : brown
    * Line: 749

      Invalid number : color brown is not a color value : brown
    * Line: 749

      Invalid number : color brown is not a color value : brown
    * Line: 749

      Invalid number : color brown is not a color value : brown
    * Line: 749

      Invalid number : color brown is not a color value : brown

Errors
URI : http://www.simplemachines.org/community/index.php

    * Line: 489

      Invalid number : color 80 is not a valid color 3 or 6 hexadecimals numbers : #80