About 80% of the responses to the principle hues, including red, yellow, green, blue, and purple were positive, compared with only 29.2% for the achromatic colors, including white, gray, and black (see Table 3).
For the achromatic colors, white attained a large number of positive responses (61.2%), compared with only 19.4% and 7.1% positive responses for black and gray, respectively.
Based on Munsell Color System, the present study used five principle (i.e., red, yellow, green, blue, and purple) and five intermediate hues (i.e., yellow-red, green-yellow, blue-green, purple-blue, and red-purple), in addition to three achromatic colors (i.e., white, gray, and black).
So for patients with SFD psychogenic pain was reflected in the following manner: red, orange, yellow (longwave part of the spectrum part of the spectrum), blue and violet (shortwave part of the spectrum), various shades from black to white (achromatic colors
), combinations of red, orange and yellow with blue and violet (mixed colors in the longwave and shortwave parts of the spectrum), red, orange and yellow in combination with green and black-and-white (mixed colors in the longwave and shortwave parts of the spectrum and achromatic colors