I have seen the zenith with the old black style Web Interface 5 login page, to achieve that look would that be a down grade of the firmware which I guess will downgrade the built in ICA client as well ?
The black looks very slick, rather than the new white and blue Citrix look.
Yes, that would be a downgrade of all components.
Desktop=picture.jpg would give you your own desktop background. That’s all.
The next Xenith release (due to in Jan’14) will have the new Citrix look&feel with the green bubbles as a background.