Why did my NIS change?

Ummm what happened? I woke my computer from sleep and Norton said I needed to restart to finish it's installation. What? Is this a scam? I restarted and now my whole NIS is changed. The UI is now green and white, and it doesn't look like it did before. What is this? And why does Norton take longer to start up after a restart/shutdown now? I'm on Windows 7, and usually it's the first thing that loads, but now it takes like a minute to two minutes for it to appear in the taskbar. I don't hVe Windows 8 so it's not the fast startup thing. Why did it change, and were any of my settings affected because of the change?

EDIT: Upon another restart, Norton was immediately in the taskbar upon start up as per usual, so I guess that’s not a problem.