I was thinking about the DaniWeb badge earlier, and the possibility of putting it onto my site, but it really doesn't fit in with my sites colour scheme :(
I would like to suggest customisation options for the current purple background.
You are already generating the image from post counts and other user data (GD or ImageMagick I assume) so would there be any chance of allowing an (optional) variable in the URI for a hex colour to use as the background to replace the purple?
Instead of http://www.daniweb.com/certificates/badge323950.jpg
perhaps allow something like http://www.daniweb.com/certificates/badge323950.jpg?c=000000
?
Just throwing it out there.. No idea how many people actually have the badges anywhere or if anyone else would be interested in doing so if it was customisable... I can't imaging server load would be hugely different if this was an option..