When calling the new cover generation dialog there are color settings on the first tab. No matter if i check or uncheck one of the default properties (Earth, Grass, Silver, Water) when i close the the dialog, all four color properties are used for cover generation. When opening the dialog again i see all four color properties checked again.
And, yes, the "save these settings...." checkbox is checked in the dialog.
Calibre 3.4, Win 8.1 64-bit
When calling the new cover generation dialog there are color settings on the first tab. No matter if i check or uncheck one of the default properties (Earth, Grass, Silver, Water) when i close the the dialog, all four color properties are used for cover generation. When opening the dialog again i see all four color properties checked again.
And, yes, the "save these settings...." checkbox is checked in the dialog.