Irradiation Changes Color of Glass. Fakers and forgers are now using a new method to alter the color of antique and collectible glassware. It is called irradiation.Rather than changing the color of an object by covering its surface with paint or some other external coating, irradiation changes glass internally within the very atoms of the glass. Cub.com offers thousands of grocery and household items, such as fresh produce, meat and seafood, deli and bakery, Quick and Easy Meals, healthy natural and organic food products, including gluten-free and other free-from options, and so much more – all at a great value. Cub Foods one-hour grocery delivery! Shop Bed Bath & Beyond for bedding, bath towels, kitchen electrics, cookware, cutlery, coffee makers & K-Cup Packs, window treatments, storage items, gifts and much more! At Replacements, you'll find over 11 million pieces of tableware, glassware, silverware, and accessories in more than 450,000 retired and active patterns, plus a great selection of estate jewelry and watches.