What is an Interference Color?
An Interference color is laminated mica pigment that "flip-flops" from a main color to a weak complimentary one. The phenomenon is similar to naturally occurring light interferences such as gas or oil on water, or a butterfly wing. The position of the viewer and the direction of the light source create interesting visuals. In direct light, the main color, such as Interference Gold shines beautifully, but with indirect light, a translucent blue color appears.

What is the best way to use them?
There are no set rules for Interference Colors. Blend with gels, mediums, and other colors to provide endless combinations. The only real rule is to not blend interference colors together, as they negate each other and result in an Iridescent Pearl color. For experimenting, a good starting point is 10 parts medium or gel to 1 part interference color. The additional acrylic allows more light to surround the pigment and creates luminous effects. A thin glaze layer of an Interference Color (Interference blended with mostly GOLDEN Medium or Gel), can create even more unique applications, and allows the underlying paints to be more easily seen.

How can I use the color "flip" to increase interest in a painting?
Artists have effectively used the color shift in many ways, depending how dramatic the desired outcome was. For instance, one artist created a "triptych", by applying paints and Interference colors on three different planes. The initial layer was a portrait done in normal pigmented paints, rather flatly. Next a layer of Regular Gel (Gloss) was applied at a low angle, similar in appearance to a slightly opened book. After the gel dried, the artist applied glazes of just Interference colors mixed with Acrylic Glazing Liquid (Gloss), visually over the underlying portrait. Once dry, another layer of Regular Gel (Gloss) was applied. This time, the angle was at the same degree of incline, however, it was facing in the opposite direction. Again varying glazes of Interference were applied on top. The result was a painting that changed depending on where the viewer stands. As one walks past, the image changes.