ive never personally used webcamXP, so i have no clue about the options. It might also be possible to have your server take care of making a dynamic image. There was an old web stats tracking widget i used when i first started web design stuff. They took the url to make an image... so for example,
example.com/fff/000/BADA55/temp.png would be the url. It would look at the first level folder (fff) and use that to create the background, followed with the 2nd level folder (000) to render the text, followed by the 3rd level for a logo tint, followed finally by the file name, which was the database variable id for your website.
If webcamxp has the option, that would be easiest.