How to disable G3000 monitor (make it black)

I am trying to disable TBM930 big glass cockpit screens for VR flying. I just need those little one just under the panel (AS1000_AttitudeBackup, AS1000_SpeedBackup). I was messing with the panel.cfg and did manage to disable those big screens, but they are all white and glowing white in night. How to make those all black? Or is there solution to cut power from those via diffrent .cfg and value?

i am using WT´s G3000 and TBM930 improvement mod. Can it be done with WT´s G3000?

edit. i did manage to do it myself. Just editing panel.cfg
background_color=0,0,0
every 0,0,512,350 etx -) 0,0,0,0