This could be an industry first. If not available. It would also be inline with Verizon's Community Responsibility Ideals.
Perhaps Verizon should have had "themes".. I believe that someone that has vision issues may be some of the biggest complainers about 1.9 contrasts. But than again, why would they want HD. ADA compliant guide for the Vision impaired? Not that there is such a thing. It could be a Verizon first. I would love to be able to toggle screen guide modes with a simple push of a button. Without getting my glasses.
Is your STB or DVR ADA compliant? Does Verizon consider ADA compliance. Might be a good idea to offer an special ADA compliant option setting for your hardware. High contrast etc.