The colorful geometric patterns celebrate the work of Dutch painter Piet Mondrian and the 100th anniversary of de Stijl (the Style), the modern art movement he and others launched.

Red-green and yellow-blue are the so-called "forbidden colors." Composed of pairs of hues whose light frequencies automatically cancel each other out in the human eye, they're supposed to be ...

The Game of Red, Yellow, and Blue Hervé Tullet. Phaidon, $9.95 (14p) ISBN 978-0-7148-6481-5 ...

The colors available seem to match those of Google's own logo, with Google-logo-toned yellow, red, green, and blue. This bit of color was found by Mishaal Rahman of XDA developers.