color intensity
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Another disadvantage to direct dye such as that found in all-purpose dye is that many of the colors are quite dull. Compare the colors in the pictures of tie-dyes on the well-designed and informative Rit® Dyes web site to those in my gallery, say, and you will notice a marked difference in the degree of brightness of the colors. Note that you can always mix opposite colors of a bright type of dye together to make duller colors, but you cannot mix bright colors from dull ones. However, there are a few direct dyes that are reasonably bright; see, for example, PROchem’s Diazol Direct dyes.
