html help, inverting colors when using bold tag Options

[jo3]

i saw this on someone's xanga but didn't check out their source, so i was wondering if anyone knew how to invert colors when using the bold tag. i'm pretty sure you put something under the "customize html header" part of the CLAF, but i'm not sure which

example:

<font color="blue">i went to the <b>mall</b> and bought 10 <b>shirts</b></font>

i want that to look like this:

i went to the mall and bought 10 shirts

where "mall" and "shirts" would be white with a blue background.
does that make any sense?


so what i'm trying to do is put something in my "customize html header" section so that whenever i use the <b> tag, the word(s) that use the tag will pretty much invert colors (the background color would be the text color, and the text color would be the background color)