HTML Character Formatting :
Font Colors

This is font color Red
This is font color Green
This is font color Blue

The Tags for the above is as follows:

<FONT COLOR="Red">This is font color red</FONT>
<FONT COLOR="Green">This is font color Green</FONT>
<FONT COLOR="Blue">This is font color Blue</FONT>

OR

<FONT COLOR="#FF0000">This is font color red</FONT>
<FONT COLOR="#00FF00">This is font color Green</FONT>
<FONT COLOR="#0000FF">This is font color Blue</FONT>

Some quick examples of colors availabe can be found at:
http://www.w3.org/TR/1998/REC-html40-19980424/types.html#type-color

More examples of colors that can be found at: http://www.htmlhelp.com/cgi-bin/color.cgi?rgb=FFFFFF