There are several advantages to using black coated taffeta for umbrellas and tents.
An advantage is that the black coating provides additional sun protection. The coating blocks some of the sun's harmful UV rays and helps keep the inside of your umbrella or tent cool and comfortable.
Another bonus is that the black coating makes the fabric more water-resistant. This helps keep the inside of the umbrella or tent dry when it rains or dews.
Finally, a black coating can give the fabric a more attractive and modern look. Coatings can add a smooth, shiny finish to fabrics, which is attractive to some consumers.
Overall, using black coated colored taffeta for umbrellas and tents can provide many practical and aesthetic benefits.