According to the information of academic reference network, there is no uniform regulation on the binding cover color of papers. If the color difference is not too big, there is no problem. As long as the binding of graduation thesis is solid and generous, the best way is to choose a bound book, and other requirements are met, but the color difference should not be too serious.
Binding, a commonly used term in printing, is usually understood as binding that books are made of rubber products such as brush glue, double-sided tape and glue stick, and finally cut according to the size of the finished product.