Hierarchies
Example
Color
Node
COL_HEADING INTENSIFIED
Level 1 and 2
COL_GROUP INTENSIFIED and COL_GROUP INTENSIFIED OFF
Level 3 and 4
COL_NORMAL INTENSIFIED and COL_NORMAL INTENSIFIED OFF
Further Levels
No storage in color (COL_BACKGROUND INTENSIFIED OFF).
Exception: If the hierarchy seems clear without color, you can refrain from using any.
For more information on the presentation of hierarchies see also