General anaglyphs may be rendered using multiple primary colors to display the first and second images of stereoscopic images. Retinal rivalry in the anaglyphs may be avoided by using transformations which balance the brightness contrast in the first and second images. Certain primary colors may be advantageous for rendering anaglyphs in six, five, four, and three primary colors. A white primary color is advantageous for displaying a monochrome second image with a color first image. General anaglyphs may be dynamically created by a display apparatus using certain transformations and communication with external sources. Four-primary-color anaglyphs may be compressed into three channels for transfer to a display apparatus. A user may select the primary colors of the first and second images and the relative brightness of the second image. Several methods to display general anaglyphs are disclosed.