<FONT FACE="fontname" SIZE=n COLOR="#rrggbb">text</FONT>where fontname is the name of one or more fonts (e.g. Arial or Arial,Helvetica), n is a number between 1 (smallest) and 7 (largest), and rrggbb is a hexadecimal color code (e.g. CC0000 for red).
Example:
<FONT FACE="Arial,Helvetica" SIZE=2 COLOR="#cc0000">my text</FONT>
Not all typefaces are available on all client computers; If you stick to familiar typefaces like Arial, Helvetica, Courier New and Times New Roman, you should be safe.