I have been using 4 different node colors in every mind-map. This is the number of colors I use steadily from one notebook to another. The colors are: 2 of bright tone and 2 of dark tone. In a mind-map the bright tone is followed by the dark one, and vice versa. The rationale behind this was to visually differentiate the nodes as they develop/expand.
With that in MN3 it is possible to filter the in-document search as well as the outline view by tags and by colors, and not making use of these filters makes me feel guilty
So my question is to the active MN users, how do you use colors to employ those filters for your good, use scenarios and rationale behind it?