Update 14.04.09: I added support for PNG transparency, and improved the vertical positioning of text to avoid clipping.
When I first made it, i called it a header-generator.
I actually needed something similar today at work, for a newsletter-application I'm working on. I added some functionality at work, and planned to release the updated version as is. I saw how horrendous the interface looked/wished for a little more functionality, so I added a little more functionality/freshened up the interface.
>> Download DemoApp
Requirements to run the app: Domino 8.x (code written in Java 5)