Yellow Deep is a rich golden yellow that reminds me that may remind some of Vincent Van Gogh’s sunflowers. Had this pigment been available back in his day I am sure he would have fallen in love with it and maybe we would have even more sunflower paintings to enjoy. As it was, Vincent Van Gogh he used a golden shade of Chrome Yellow which is both very poisonous and can sometimes turn brown when it reacts with other colors. No such problems with Yellow Deep as it is both non-toxic and very lightfast. This particular pigment is described as a diarylide which means that the number of carbon and hydrogen atoms in the color molecule is doubled. This alters the color somewhat but also increases lightfastness slightly. (Artists enjoy these newer beautiful organic colors ???) Most of these newer organic colours them have become available since the 1960’s and originated with the large amount of research dollars poured into the search for new automotive colors. As artists we need to be grateful thankful to the automotive industry as cars are have been subject to intense sunlight outdoors for many years and so any color that is good enough to be used as a car color is certain to have enough lightfastness to be used in artists paints. In this case we benefit with a color that is perfect for painting flowers and golden wheat field’s and sunlight and all the other sorts of things that inspired Van Gogh.