Color-coded chord intervals
When enabled, the notehead of the lowest note in the chord, the root, is always black. The color of each notehead above the root is determined by the interval between it and the one below it. For example, yellow is defined to be an interval of three semitones and green an interval of four.
With this scheme, even though the notehead patterns of the chord (staff position, notehead shapes, vertical spacing) vary depending on the root, the color-coding uniquely identifies the chord on any root. Here is an example of the Major triads: