Access theme

[Wysy]

Hi,
Until just recently, my access has had the "classical" white, red theme. Navigation pane and workplace white. However after a recent restart all of a sudden white background has changed to gray. Why? I played around the with Option/General/Office Backround and Office Theme but i can not get back the "white". Is there a work around?
thanks

 

[Wysy]

So it means the software update has made the change?