bug#32975: Emacs 26.1; GTK Warnings

[Tjernlund]

On Sun, 2018-10-14 at 17:57 +0300, Eli Zaretskii wrote:
> [PLEASE don't remove the bug address from the list of addressees.]
> 
> > From: Tjernlund <tjernlund@tjernlund.se>
> > Date: Sun, 14 Oct 2018 10:31:46 +0200
> > 
> > > That's a lot to consume.  Let's start from the other end: if you have
> > > only this line in your .emacs:
> > > 
> > >   (setq initial-frame-alist '((background-color . "#333333") 
> > > (foreground-color . "White") (cursor-color .
> > > "White")))
> > > 
> > > does it then work as expected?
> > 
> > Did that and no, it does not work as expected.
> 
> And if you invoke Emacs with "emacs --no-x-resources"?

That works ! :)
I only need default-frame-alist settings then.

Seems like MATE tries to control every background color there is:

xrdb -query | grep background
*Box.background:        #edeceb
*Button.background:     #edeceb
*Canvas.background:     #edeceb
*Canvas.selectbackground:       #86abd9
*Checkbutton.background:        #edeceb
*Command.background:    #edeceb
*Dialog.background:     #edeceb
*Entry.background:      #edeceb
*Form.background:       #edeceb
*Frame.background:      #edeceb
*Label.background:      #edeceb
*Labelframe.background: #edeceb
*List.background:       #edeceb
*Listbox.background:    #edeceb
*Menu.background:       #edeceb
*MenuButton.background: #edeceb
*Menubutton.background: #edeceb
*Radiobutton.background:        #edeceb
*Scale.background:      #edeceb
*Scrollbar*background:  #edeceb
*Scrollbar.background:  #edeceb
*SimpleMenu*background: #edeceb
*Text.background:       #edeceb
*Toggle.background:     #edeceb
*Toplevel.background:   #edeceb
*XmCascadeButton.background:    #edeceb
*XmCascadeButtonGadget.background:      #edeceb
*XmDialogShell.background:      #edeceb
*XmFileSelectionBox.background: #edeceb
*XmForm.background:     #edeceb
*XmFrame.background:    #edeceb
*XmLabel.background:    #edeceb
*XmLabelGadget.background:      #edeceb
*XmList.background:     #edeceb
*XmMenuShell.background:        #edeceb
*XmMessageBox.background:       #edeceb
*XmPanedWindow.background:      #edeceb
*XmPushButton.background:       #edeceb
*XmPushButtonGadget.background: #edeceb
*XmRowColumn.background:        #edeceb
*XmSash.background:     #edeceb
*XmScrollBar.background:        #edeceb
*XmScrolledWindow.background:   #edeceb
*XmSelectionBox.background:     #edeceb
*XmSeparator.background:        #edeceb
*XmSeparatorGadget.background:  #edeceb
*XmTearOffButton.background:    #edeceb
*XmTearOffButtonGadget.background:      #edeceb
*XmText.background:     #edeceb
*XmTextField.background:        #edeceb
*XmToggleButton.background:     #edeceb
*XmToggleButtonGadget.background:       #edeceb
*background:    #edeceb
Emacs*Dialog*background:        #edeceb
Emacs*backgroundToolBarColor:   #edeceb
Emacs*menubar*background:       #edeceb