Parallel developments in the discovery of modern synthetic dyes and the technology to“bond” them to the fiber has resulted in a tremendous increase in the variety of colors available to the fashion designer. Indeed they now span almost every color and hue of the visible spectrum. Indeed if a suitable shade is not available, structural modification(modify) of an existing dye to achieve this can readily be carried out, provided(倘若) there is a satisfactory market for the product.
Other major advances in this sphere have been in color-fastness, i.e., resistance to the dye being washed out when the garment is cleaned.