In the previous paper we reported colors to represent male （5PB4/12） and female（7.5RP5/14） that were obtained from 100 Thai subjects. We then experimented to see if colored sign is better than achromatic sign to detect from far distances. Achromatic signs for male and female figures and chromatic signs, blue male and the red female. Those signs were presented at different 11 viewing distances in the outdoor, from 35 m to 250 m, and subjects responded which sign they recognized by naked eyes and wearing the cataract experiencing goggles. The red sign gave the longest viewing distance. The blue sign appeared black at far distances and gave a similar result as the achromatic black sign.

The simultaneous color contrast was investigated for two different stimulus conditions. One was to use a semi-circular surrounding field so that the visual angle of the surround can become very large, larger than 180 degrees. The other was to use a flat colored paper of an extremely large size. The color appearance of the central gray test patch was measured by the elementary color naming method at different viewing distance. The vividness of the test patch color increased for larger visual angle of the surround but the way of the increase differed between the two conditions. The relationship between the test patch color appearance and the surrounding color appearance was same as the result obtained by the two rooms technique an by the afterimage experiment to indicate the simultaneous color contrast takes place by the same mechanism of the visual system, that the SCC phenomenon also occurs because of the brain chromatic adaptation to illumination.

When movies enter the color era from black and white images, color has become a unique and important part of the language of video. Color is a perceptual visual element which is silent but infectious, infecting audiences potentially.

Blue is one of the three-primary colors and has a vital position in the color world. It is the spokesman for negative energy, affecting people's mood, and even personality. This article analyzes from the perspective of movie audiovisual language, how directors use blue to express in movies.

In this paper, through the analysis of the poster color of the classic, jazz and rock music festivals in different ages, the synesthesia characteristics of music and color are explored, and the poster color is extracted by software. It is found that different music festivals have different poster color styles. For example, rock music mostly uses bold colors and bright contrast colors, while classical music mostly uses overt natural color features. Like music, the rhythm of rock gives people a sense of excitement, while the rhythm of classical music is more fluent and balanced. Through case analysis, it is concluded that color is the external spiritual embodiment of music.