Color Map
Maps each value in memory to a value for the display
- e.g. color transformation (3,3,2) -> (2,2,2)
- e.g. binary image planes
- Use each bit to represent one color
- Overlapping colors defined by color map
- Mask a plane (color) by changing the color map
- e.g. 4 bit image planes
- Two images - switch between them by changing the color map