No, the Scrolling Bar should be black and white.
Could you take a picture of these color lines, and upload them to photobucket.com or imageshack.us and post that link here in the forum? Looking at it will give me a better idea of what you're seeing.
Just bought the tv and I'm really impressed by its picture quality. However, got a question about the scrolling bar. Instead of bars in color of gradient from white to black, there are some vertical color lines. Is it normal?