Color interpolation behavior. This class defines a behavior that modifies the ambient, emissive, diffuse, or specular color of its target material object by linearly interpolating between a pair of specified colors, using the value generated by the specified Alpha object. The behavior modifies the color specified by the Material's colorTarget attribute, one of: AMBIENT, EMISSIVE, DIFFUSE, SPECULAR, or AMBIENT_AND_DIFFUSE. The ALLOW_COMPONENT_READ bit must be set in the Material object in order for the Material's colorTarget to be read. If the Material object's ALLOW_COMPONENT_READ bit is not set, the diffuse component will be modified.