How can I augment a sheet of glass to get rid of the green tint and make it look white?

More specifically, my wife and I decided to decorate our home with white custom made wood furnishings. We used white polyurethane paint asked that a sheet of glass be placed on all surfaces (dining table, coffee table) for added protection. However, due to the large size of our tables an equally large (and thick) piece of sheet glass had to be used to cover the surface. The problem we're now facing is that, due to the thickness of the glass sheets there is a prominent green tint visible that is in contrast with the white color we had hoped to maintain. I understand now why the green tint is there (iron impurities) but I'd be interested in a solution to get the surface to look white somehow whilst preserving the structural benefits and convenience of the glass itself. I've considered a white vinyl sticker, sandblasting....really not sure what makes the most sense in terms of a long term, zero maintenance, rugged, clean solution. Any feedback would be well received!