Silk, cotton and wool fabrics were dyed using extract from the frozen skin of a kind of black grape“steuben”, which contains delphinidin-3-glucoside and cyanidin-3-glucoside of anthocyanins, with sixtypes of mordant including Mg2+, Al3+, Ca2+, Ti4+, Fe3+ and Cu2+. Various colored fabrics wereobtained by changing the types of fiber, mordant and the concentration of the mordant. The colorsof the fabrics were measured with a spectrophotometer and expressed according to the CIELAB colorsystem and ΔE* value. It was revealed that mordant treatment with Al3+, Ti4+, Fe3+ and Cu2+ ionsespecially enhanced color fastness to washing (color change) and antibacterial properties of the dyedfabrics. The treatment with Fe3+ and Cu2+ ions enhanced color fastness to light. Themeasurements of structure of the individual fibers, including crystal phases, surface morphology,surface atomic ratios etc., showed that the dyeing caused no significant damages and changes to the fabrics.
Relationships between general color preferences and favorite clothing colors of elementary, junior and senior high school students have been investigated. Twenty four adjectives are chosen, and for each adjective each of 749 students have chosen two appropriate colors from a list of 56 colors. The obtained data have been analyzed by using the correspondence analysis and the cluster analysis, and the following conclusions are obtained: (1) “Pink” has a feminine and sweet image contrasting with dark, cool or vivid images, and has occupied the largest and the most important parts of their color emotions; and (2) The favorite general colors of boys or girls have not changed so much according to their ages, but their favorite clothing colors have apparently changed according to their ages, especially after senior high school; and (3) In comparison with boys, girls evaluate whether they like or dislike by the tones of the colors, and they like more various hues of clothing colors from their early grade school years.