The work area (user interface) > Settings > Change Viewport settings > Setting the selection and fly-by options
  
Setting the selection and fly-by options
You can change the default options when elements are selected and when the cursor moves over a selectable element (referred to as fly-by).
1. The object is not selected and the cursor is not positioned over any part of it.
2. The cursor passes over the face (fly-by). In this case the fly-by color is set to red.
3. The face is selected (by clicking the mouse) while the face is highlight by its fly-by color. In this case, the selected color is set to blue.
Fly-By Settings:
Enabled (under Highlight) switches on or off the fly-by highlighting.
Enabled, after [ms] specifies the delay time for fly-by highlighting.
Shown, after [ms](Tooltip) switches on or off the object's name during fly-by highlighting.
3D Fly-By Color specifies the fly-by highlighting color for 3D elements.
2D Fly-By Color specifies the fly-by highlighting color for 2D elements.
Lightweight Fly-By Color specifies the fly-by highlighting color for light weight models. For more information about lightweight models, see Lightweight models.