In the Menu Bar, click Edit > Preferences, then on the left side of the dialog box, select Selection.

Base

Bounding Box Visualization Size

Defines a minimal bounding box size for objects of size 0.

LOD Selection

Automatically selects all the other children of a distance LOD (Level of Detail) node, if the geometry is a child of a distance LOD node and you are selecting a geometry node in the Render Window.

Auto Scroll to Selected Node

Initiates an automatic scroll in the Scene Graph view to the selected node, when selecting a geometry node in the Render Window.

Select 100% Transparent Objects

Enables the selection of objects that have 100% transparent material from the Render Window. This feature only works in OpenGL.

Wireframe

Toggles the display of wireframes for all selected objects.

Enable Wireframe

Draws a wireframe of all selected objects.

Always in Front

(OpenGL Only) Draws the wireframe on top of all objects, even if other objects cover the selected object.

Wireframe Color

Sets the wireframe color.

UV

Island Selection Color

Displays the current color for selected islands in the UV Editor. Drag the slider or click the current color swatch to set a different color.

Island Border Color

Displays the current color for the border of islands in the UV Editor. Drag the slider or click the current color swatch to set a different color.

Vertex Color

Displays the current color for unselected vertices in the UV Editor. Drag the slider or click the current color swatch to set a different color.

Edge and Vertex Selection Color

Displays the current color for selected edges and vertices in the UV Editor. Drag the slider or click the current color swatch to set a different color.

Edge U Constraint Color

Sets the color for all selected edges constrained horizontally for Unfold or Optimize. Drag the slider or click the current color swatch to set a different color.

Edge V Constraint Color

Sets the color for all selected edges constrained vertically for Unfold or Optimize. Drag the slider or click the current color swatch to set a different color.

Selection Modes

Show Preselection Highlight

Displays the bounding box of an object in the preselection color before selection.

Preselection Color

Sets the wireframe color.