LW capi::output-pane odd behavior

I notice that when I use capi::output-pane in a layout, the default is
black background and white foreground.  If I create a subclass of
output-pane, the default is white background and black foreground.
Changing the behavior is easy enough w/initializations or default args on
the subclass definition, but I don't expect an inherited class to change
its behavior on subclassing.

ex:

(defclass my-output-pane (capi::output-pane)
   ((data   :accessor data :initarg data)))

(contain (make-instance 'my-output-pane))  ;;;white background
(contain (make-instance 'capi::output-pane)) ;;;black background

R



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