Finding the inserts or the material to cut and make my own is proving to be nearly impossible. Is acrylic plexiglass good enough or do I need lexan? Would prefer to have tinted grey or bronze. Think I found some lexan at eplastics online, but shipping is ridiculous. Home Depot, Lowe's, and Menards can get plexiglass more reasonable. Don't want to go cheap route, and it be a waste of money. Thanks for any and all suggestions.