In 14th-century Florence, for instance, the preferred method for producing pink fabric dye required ... has published volumes on blue, black, green, red, yellow and white.

Pink and green ... of red, and green tends to lean heavily on its parent color, blue (though it is important to keep in mind for later that green can also include strong yellow notes).

Iron will create a really wonderful green, but you can get widely differing results using tin, vinegar, blue vitriol ... your hands pink for days. Guess what? That will dye fabric as well.

The other colors in the spectrum, moving at their particular frequencies, are indigo, blue, green, yellow and orange. The color pink, not a part of this spectrum, does not have a particular frequency.