Blue is one of the most popular choices for favourite colors, and navy aficionados are quite particular about the specific shade of color they love. But even people who prefer red or green tend to admire plates and glassware for the dining table in a rich shade of azure. There's something that draws one to cobalt blue glassware, and has since the beginning of the color creation. How Does The Color Get Into Glass? All glassware is formed of glass heated to demonic temperatures of 2000F and above. While the glass is in a liquid state dyes and pigments can be mixed in to the clear material to obtain rich reds, bright oranges, and many other shades and hues on the color palette. The navy glassware so commonly seen on marketplace shelves and fine shops is created by adding cobalt salts to glass. Some glassware isn't uniform in color. Glassblowers can add tints and pigments in such a way as to create swirls of color inside clear or coloured glass. Spotting and spattering are also some colour patterns used to spice up glass pieces.