Chessboard Selection Dialog - czbar/ChessForge GitHub Wiki

It can be accessed from the View Menu:

 

Click on the button representing the view you want to change the board colors for, and then click one of the small chessboard icons to assign those colors to the view.

 

Note that the chessboard set for the Study view is also used for the main board in the Chapters and Bookmarks views, since there the main board is inactive and has no separate setting.