Replication of the main result. Symbol colors are the RGB values of the desaturated targets (circles, triangles, and small squares) and distractors (big squares) These colors will not be chromatically correct on the reader's monitor or printout. Circles: reaction time data, +/- 1 s.e.m. Bold line, model described in text and Supplement. Inset, stimulus chromaticities in xyY coordinates. Squares, y (left ordinate) vs. x (abscissa); Triangles, luminance (Y, right ordinate) vs. x (abscissa).