Buyers of an executive version of the new Airbus A350XWB will have the option of selecting the electrochromic (or “smart windows”) technology from PPG. The windows, developed by Gentex of Zeeland, Mich., contain an organic di-electric gel. When a very low electrical current is introduced, the gel will darken, rendering the window opaque. When no electrical current is present, the window allows the passage of approximately 60 percent of outside light. Airbus claims the windows on the A350XWB will be larger than those of any other bizliner.