Color & size
Click the Color & size toolbar icon to color and resize notes into named groups - the same criteria Filter uses, applied to change how matching notes look instead of hiding non-matches.


Creating a group
Click "+ new group", pick a color, give it a name, and add criteria the same way as Filter - Text, Tag, Property, Folder, Filename, Not edited at least, Activity, Minimum number of links - including each criterion's own include/exclude word.
Optionally turn on "Scale size" to also multiply matching notes' size (on top of their normal link-count-based size, not replacing it - a highly-linked note in a group still reads as a hub).
When several groups match the same note
Groups have a priority order - drag a group's handle to reorder the list. The first enabled group (in that order) whose criteria a note matches wins; a note can only be one color, so this is what decides ties. Order-across-groups is effectively "OR" for free: create a second group with different criteria and a different color to color two different kinds of notes at once.
A group with no criteria yet - or a note that matches no enabled group at all - falls back to the graph's default color and size.