What means colormarks on the scrollbars?

To simplify visual representation of the differences and give you a way for easy navigation, xlCompare reflects all the differences on the scrollbars.
Look into this example:
Colormarks on the scrollbars
On the image above you see vertical scrolbar of the right pane - where the data considered as new.
  • Green mark - means on this place we have data which has been added to the worksheet
  • Orange mark - means on this place data was changed
Also, you may get Red mark on the left scrollbars (vertical and horizontal). This means - in this place data was deleted.
Just scroll down to the part of the worksheet you need and review the difference.