The preview pane located on PNotes Control Panel allows you to preview contents of notes without opening them.
You may hide or show the pane using toolbar button or menu command.
If you use skinless notes, the background color of preview pane will change accordingly to note's background color, unless you specify another one and choose the option to use user defined color.
If your notes are skinnable, the default background color of preview pane will be system windows background color, unless you choose your own one.
Color settings for preview pane of PNotes Control Panel are valid for preview pane of overdue reminders dialog as well.