These paintings change dramatically depending on the light source: daylight, incandescent indoor light, fluorescent light. A positive and negative image can result, depending on the light the painting is in. Some paintings combine the effect of positive and negative in the same painting, depending on the light source. Pure color art, pure color paintings, impressionism, surrealism, abstract color, color experimentation, Bucks County Artist, fine art color, op art (optical art), J Philip Peterson, original paintings, impressionistic painting, contemporary artwork, commisioned artwork, murals, one man shows, Bright paintings, pure color, impressionism, landscapes, color art, j philip peterson, positive negative, bright colors, baja art