Green screens are still in widespread use among NaviLine customers, who have their share of 5250 zealots. But most customers have opted for a GUI that SunGard PS first started offering in 2000. The GUI, which was developed with Jacada’s screen-scraping tools, now looks rather crude, and was causing trouble. “Customers were making comments that the UI was getting stale,” said Kevin Mooney, senior director of NaviLine operations. “It’s 14 years old, but looks 20.”