[Edit] - Looks like you found the right Property while I composed my post.
The Property you're after is the GraphicsWinLayoutBackgrndColor, methinks... Here's a quickly written toggle routine:
(defun c:ShowPlotStyle
(/ *error* _ShowPlotStyle acApp acDoc acDispPrefs
)
)
((member msg '
("Function cancelled" "quit / exit abort"))) ; <esc> or (quit) ((princ (strcat "\n** Error: " msg
" ** "))) ; Fatal error, display it )
)
(defun _ShowPlotStyle
(acDoc value
) )
)
)
(if *GraphicsWinLayoutBackgrndColor
* (setq *GraphicsWinLayoutBackgrndColor
* acDispPrefs
*GraphicsWinLayoutBackgrndColor*
)
)
(_ShowPlotStyle acDoc :vlax-false)
)
(setq *GraphicsWinLayoutBackgrndColor
* acDispPrefs
)
)
acDispPrefs
16777215
)
(_ShowPlotStyle acDoc :vlax-true)
)
)
)
(*error* nil)
)
... If this is a critical setting, I'd also suggest you incorporate an Event handler which restores your original options prior to the Application closing.
Cheers