by litdannym, paint change color and darken bleached, and become transparent, like all colorful layer because of this show through the previously recorded location. Not to mention the fact that not all pigments are generally light-fast by themselves or in mixtures. Previously, though printed, that which can not be mixed. Now the producers do not write the pigment (chemical) composition - all became clear. Soot gas most established manufacturer in Russia, Nevsky palette - is srednestoykoy. I also heard about its migration, but he never saw in his work for more than 30 years.
A Future of pigments is unclear. In Europe, began to prohibit all pigments with heavy metals, lead, cadmium, mercury, molybdenum .. And replaces them with synthetics. GAMMA, a manufacturer hudmasla in Moscow now and wrote on the tube - Cadmium Yellow (imitation), r e is no longer cadmium. What they have light resistance and shelf life, how and with what they are combined - do not clear.
So that future developments of the classical an oil painting under threat, it is likely it could end its existence.
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