FreeCAD: How to set background color?

FreeCAD 0.19
  1. Select [Edit]-[Preferences...] in menu bar.

  2. In [Display] of Preferences dialog, select [Colors] tab and click colored button at [Background color].

    Preferences dialog
  3. Select any color in Select Color dialog and click OK.

    Select Color dialog
  4. Click Apply in Preferences dialog to apply your settings.

    Changes Color
Note: Background color is set to following gradation color in default settings.
  • Upper RGB color : (51, 51, 101)
  • Lower RGB color : (151, 151, 170)