The image is a photograph of a sign that reads "Contrasting Color Wares". The sign is white with black text and is attached to a beige wall with two screws. The text is written in Chinese characters and is divided into two columns. 

The first column explains that contrasting color is called filling color and stippling color, which originated from Xuande reign in Ming Dynasty and got mature in Chengdu region in Ming dynasty. It is the color porcelain process combining under glaze color and over glaze. Draw the outline of the pattern with blue and white. Burn under the temperature of 1300°C until the shape is formed. Fill in the outline with various colors and then burn it again. The blue and whites are used as ground pattern or sidelines in Contrasting Colors, are the auxiliary colors in the main patterns.

At the bottom of the sign, there is a small illustration of a blue circle with a white outline.