What's the significance of the color change in this picture?
EDIT: I was referring to the yellow and green areas of the scroll bar.
Oded
Blue - SQL keywords - query specification components
Pink - Functions
Grey - SQL predicates
Black - table/column names/aliases
The colored bars on the left, next to the line numbers, appear next to lines that have been changed since opening the file:
Yellow - Changed lines that have not been saved
Green - Changed lines have already been saved
来源：https://stackoverflow.com/questions/13055378/what-do-the-different-colored-bars-in-the-query-editor-menu-mean-in-ssms