General Question

RedDeerGuy1's avatar

What is the science behind colors of paints, dies and food coloring ?

Asked by RedDeerGuy1 (24353points) June 4th, 2020

Like purple centeries ago was only available to the rich, and was made from mollusks.

What are the properties of different colors?

I also heard that red velvet cake coloration comes from the blood of bugs?
Is red velvet cake made from Bugs?

Red Dye Made From Bugs. FDA requires they list the ingredient caochineal or carmine because some people may be allergic to it. It’s not found in Kosher products because dietary laws prohibit insects or parts in foods. At the end Ted Allen held up a piece of red velvet cake, but some recipes call for beet juice to give it a red color.

Also what colors are the most expensive to produce?

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10 Answers

lucillelucillelucille's avatar

Red can be an expensive color.
I’ve read somewhere that they used to use a certain type of bug for red lipstick.I don’t know if that’s still done but I like it and won’t give it up.
Yesterday, I ran out of burnt sienna. I know it has iron oxide and manganese oxide, both of which I have in my studio…or I could go to Italy and dig my own.
Ordering would be much faster.
In ceramics, one can get a glaze to go from green to red by changing the atmosphere in which it’s fired (oxidation or reduction)
This is a recipe for a copper red glaze and
here: is what a copper red glaze can look like.

Dutchess_III's avatar

They use the resin secreted by the female shellac bug for the hard candy coatings, like in MnMs.

As far as the “science” behind colors, if something is green, it means that it has absorbed every color except green, and is reflecting green back.

Dutchess_III's avatar

I always heard they used bat manure in lipstickk @lucillelucillelucille….

lucillelucillelucille's avatar

@Dutchess_III -If he kisses you, his love is real!
Actually it is guanine ( crushed fish scales) not to be confused with guano.

Dutchess_III's avatar

Oh! I always heard guano! Well, that’s a relief.

lucillelucillelucille's avatar

@Dutchess_III -Sounds similar enough. Dr Strangelove had the best Bat Guano. XD

LostInParadise's avatar

I did a Web search and found this article According to the section titled Why Go Artificial, there is no limit to the colors that chemists can create, only a few of which have been approved for food coloring.

kruger_d's avatar

Lapis lazuli is considered the most expensive pigment. You might know it from King Tut’s death mask. Some common natural dyestuffs are woad, indigo, cochineal, saffron, Brazil wood, black walnut husks, goldenrod, beets, onion skins. Yarn and cloth are often pretreated with a mordant that will can make it more receptive to dye, alter the color, or make the product more lightfast. Dyes are generally less lightfast (more fugitive) than pigments, but are often used in less expensive paints. Commercial textiles are almost exclusively dyed with synthetic dyes due to cost.

Dutchess_III's avatar

Daym @kruger_d! Thanks for the education!

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