thanks for writing so much about my customizations. Bizeps is a center for independent living of disabled people here in Vienna. Online they have one of the most important news services in German language.
The translation aside we wanted to create a distinct and simple look, matching the over all website by leaving everything out which wasn’t necessary. I didn’t mess with everything but the buttons because they fitted very well.
For the sprites: I developed using individual images and used the sprite generator at http://spritegen.website-performance.org/ to get the sprite.
Over all it was very easy to do those changes with CSS, it really helped to have a more visual CSS editor, I used CSSEdit by MacRabbit (http://macrabbit.com/cssedit/).