Craft paints are low end paints. In order to keep the cost down, several things are done. These paints are formulated to keep the cost down, and sacrifices ARE made. Ever notice that all the bottles are the same price, but with artist grade colors there is a variation in price between colors?
Cost saving measures include (some or all of these are used):
1. Lower quality pigments.
2. FILLERS to extend the pigment. Fillers can include chalk or gypsum. This results in LESS pigment per volume.
3. Coarser grind of pigments. Often results in a grainy coverage. Finer grind takes extra work making the cost go up.
4. Opaquing agents so the paint covers well. Same stuff used as the filler.
5. Less stable pigments - meaning that many are not lightfast.
6. Substituted pigments. In other words, a color labeled as "Cadmium Red Hue" contains NO cadmium pigment, but a lesser quality pigment that resemles the hue of cadmium red. This is done to keep the cost down as well as to make the paint non-toxic. Some of these pigments are not lightfast.
It is generally understood that craft paints are meant to be used on items that people don't expect to last for many years...crafts. Therefore, lesser quality pigments are used to make them.
Artist grade pigments can be expensive because there is more of the pigment in the paint, the grind is finer, there is less (or no) filler, and some of the pigments themselves are very expensive (I have a jar of Cobalt Blue that cost me $40.00).
Another thing with craft paint is that you never know what pigments are in those colors. Many are mixtures of several pigments. That's why tere are so many color choices available in craft paint lines. It's called a "Convenience" color in the industry. Many people don't want to bother mixing their own paints, and these are offered for that reason.
A quality paint will list the pigments used in that color, whether it's a single pigment color like Cadmium Red, or in a convenience mixture. JoSonja's is the most well known brand for fairly goo quality paints and offer many convenience mixtures.
So, in a nutshell...you buy a .50 cent paint, you're gonna get a .50 cent result.
A person buys quality carving tools, quality wood, then skimps on the paint. Doesn't make much sense.
I have an in-depth discussion about this subject on my web site:
http://www.whisperingeagle.com/Demos.htm#Technical Quote:
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With just the basics, red, blue, yellow, white, black, etc., you can mix any other color you need.
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Lynn...you're right up to a point. It actually takes a little more than that. Theree exists no "pure" red, yellow or blue pigment. So depending on which of these you choose, you may get vibrant mixes on one end of the spectrum and dull mixes on the other. In other words, a certain yellow with a certain red may make a brilliant orange. But that same yellow with a certain blue will make a very dull green. Again, the link above contains a detailed expanation of this.
Sorry if I'm long-winded on this. I have spent a long time studying color (still am experimenting...that'll never stop for me), and it's something I feel strongly about. The single most important reason many people are frustrated with their mixing & painting is because they don't really understand their pigments. A little bit of experimentation and study will arm a person with the knowledge to mix any color they want...every time...with a limited palette.
PS: Thomp...you're not color blind. There is no standard as to what a manufacturer can call their mixes. So Brand "A"s Seafoam may look blue, and Brand "B"s Seafoam may look green. Without a listing of the pigments they used to make that color, you will have no idea of what you're getting. igher quality paints will always list their pigment ingredients.