Color Bleeding - The transfer of color between nearby objects, caused by the colored reflection of indirect light. This is a visible effect that appears when a scene is rendered with Radiosity or full Global Illumination, or can otherwise be simulated by adding colored lights to a 3D scene.

Source: Digital Lighting & Rendering by Jeremy Birn, definition and 3D images adapted from the book by permission.  This page © 2002 by Jeremy Birn.