gboolean modest_ui_dimming_rules_on_mark_as_read_msg_in_view (ModestWindow *win, gpointer user_data);
gboolean modest_ui_dimming_rules_on_mark_as_unread_msg_in_view (ModestWindow *win, gpointer user_data);
gboolean modest_ui_dimming_rules_on_mark_as_read_msg (ModestWindow *win, gpointer user_data);
gboolean modest_ui_dimming_rules_on_mark_as_read_msg_in_view (ModestWindow *win, gpointer user_data);
gboolean modest_ui_dimming_rules_on_mark_as_unread_msg_in_view (ModestWindow *win, gpointer user_data);
gboolean modest_ui_dimming_rules_on_mark_as_read_msg (ModestWindow *win, gpointer user_data);