The Post-it page flags are a plastic film material and the dispenser is plastic.
Yes, these document holders have a slight slant backwards so that the papers should not lean forward.
The Vario Reference Desktop System is available in the Assorted Borders & Panels color option or in the Gray color option. The Assorted Borders & Panels comes in a 20 Panels system. The VARIO Antimicrobial Reference Desktop System, 10 Panels (Item #: DBL535810) comes with 10 panels. However, you can order additional panels through the extension system, VARIO Antimicrobial Wall Reference System, 10 Panels, Gray Borders: Item #: DBL535710.