That "tinting" is probably a peel-off protective sheet which comes with all polycarb sheeting. Go and get it quick ;D ;D ;D It's great stuff. Very strong and drillable and you can cut it with a good saw or an electric jigsaw. It will make you a cloche or frame lid etc
Once you get the hang of this lotty lark, skip raiding becomes second nature. Anyone on here would have had that away sharpish ;D