User In Colour & Bold

[Devil Woman]

I know how to make it so that a users name will show up in colour on the who's online bit at the bottom but I was wondering how I can make it so that some will show up in bold, strike out, italic and colour?

I know this is the code that you use in the html markup when changing the colour

<font color="red"> </font>

what would I need to add in there to make the font either bold or italic or strike out?

Thanks for your help