You can refer to the following opinions:
The request for color protection limits the scope of patent protection, excluding those whose shapes and patterns are the same or similar, and those whose colors are different or dissimilar. Then, why do some patent applications for design require color protection? Shape, pattern and color are the three design features that constitute the design patent. If it is known that the shapes and patterns of the products applying for design are shared by similar products, and the colors applied for protection are novel, the combination of the colors requested for protection with the shapes and patterns breaks through the traditional colors used by such products, or overcomes the prejudice that similar products cannot use the colors, or the use of the colors leads to commercial success. Then, according to the review regulations of different designs in the Review Guide, the combination of colors, patterns and shapes can meet the requirements of design patents, that is, a new design with aesthetic feeling and suitable for industrial application can be formed. On the other hand, if the color of the application is not protected, the scope of protection is only the combination of shapes and patterns, and the patentability of designs composed of the same or similar shapes and patterns is lost due to publicity. Therefore, on the surface, the scope of protection of this kind of design patent application is narrowed due to the limitation of color, but this is the only way to obtain patent protection.