In a method and system for performing color correction for an image signal, a first set of matrix coefficients for color correction of the image signal in a 3-dimensional RGB color space is transformed to a first set of points of a two-dimensional XY plane. In one embodiment, the toilet flush is attached to a lever. A modular implant assembly is provided which can be passed through a relatively small bone hole and then assembled in situ partly in the bone hole and finished in the joint or wholly in the joint. Additional apparatus, systems, and methods are disclosed. The operating system also determines whether or not to deactivate one or both of the heating systems.