As such, this paper takes two themed works "Commemorating a Century of Xiling Seal Engraving Society" and "Portraits of the Pioneers of Xiling Seal Engraving Society", which were produced by Mr. Wu Yongliang for the centenary celebration of Xiling Seal Society, for research object.By comparison of the differences of color application of their two artworks, it comes to an understanding of the association of color and meaning interpretation in Mr. Wu’s works, and then further makes interpretation of his views on artistic creation and color based on this point.The viewpoint of this study is that the transition from 'using colours as colours' to 'using ink as colours' in the two works is not just a matter of technical change, but is the artistic choice made by the artist on the basis of his profound awareness of the creative theme to express the spirit of creative theme. Mr.From Wu Yongliang’s practice, it can be seen that the function of application of colour in traditional Chinese painting from ‘depicting shapes’ to ‘forging artistic conception’ have undergone functional evolution, thus offering a reference case for understanding the Role of color in traditional Chinese painting.