Available as an attribute on the <font> element (as well as on several MathML elements), this attribute names a color in which the text should be displayed or printed.
Usage of this attribute is discouraged. The attribute was inherited as part the XHTML table model and the MathML DTD. If used at all, it should be restricted to table cells and equations. See also documentation for the Mathematical Markup Language (MathML) 2.0 DTD.