All these features are available on the Design panel that can be open by clicking on the following icon on the right top of the screen:
The Design panel will open with the Styles and Nodes tabs pre-selected:
Styles set in a new visualization are automatically re-applied to newly created visualizations. Users can reset their styles to default styles at any time from the gear icon at the bottom-rigth part of the Styles or Captions panel.
Default styles may be defined by an Administrator of Linkurious Enterprise. Users can then change these styles after creating or opening a visualization.
By default, every node category has a pre-assigned color.