What's the use around colored paper?
Colored paper is similar to posters that we often hear in our lives. Generally, colored paper in circulation has a straight signature, which is the author's autograph or painting. This kind of colored paper is rare, so it is very expensive.
There is also a kind of carbon paper, from signature to pattern, which is printed on carbon paper. Most of it is used as a gift and a few are used for sale, so the price is naturally much lower than that of direct signature.
Hard periphery, such as twisted eggs, elevators, models and hand-made collectibles, is called hard periphery with little practical value, which is more expensive, while products with certain practicality, such as stationery, are called soft periphery, which is cheaper.