Eyewear whose lenses are colored differently from one another. This is the case with the classic form of 3D Glasses, but modern ones adopted a different method to convey 3D imagery to the viewer.
Not to be confused with Multicolor-Tinted Eyewear, which has multiple colors on each single lens. Nor with Asymmetrical Eyewear, which has different (frame) shapes or designs on each lens.