This is one way of many:

<font style="font-size:24px; font-weight:bold; color:brown;">Testing</font>

When posted you get this:

Testing

I don't know if that helps or not but maybe you can use it as a guide?

I right click on the desktop, click on personalize, windows color, then advanced settings. You click on the area you want to change and the options will come up. If you are using Firefox, install the ad on called "no squint" and you will have an option in it.

I find the whites so hard on my eyes, I like to change backgrounds to a pastel. The only thing I have been able to change is the first page in WLmail.

(font size=+2)makes it this big(/font)
(b)makes it bold(/b)
(font color=red)makes it red(/font)
(i)makes it in italics(i)

But instead of the parenthesis, use the greater than and less than symbols as chugger did above.