Enhanced Track Change Features in Visual Studio 2010
Track Changes is a well known feature in Visual Studio. To enable or disable this feature, you need to follow these steps:
Open the Visual Studio 2010 IDE Click on Tools -> Options -> TextEditor Switch to General section and then check or uncheck "Track Change" option as needed
Till Visual Studio 2008 we were familiar with Green and Yellow colors as color indicators. With Visual Studio 2010, you now have the Green color indicators as well. Green color is used to indicate the lines in source code that have been edited before the file was last saved. Yellow colors are used to indicate the lines in your code file that have been changed after the file was last saved. Once you save the code file, the Green indicators disappear - in essence, the Yellow indicators would become Green once the code file has been saved.
The Orange color indicator has been introduced new in Visual Studio 2010. If you undo your changes after a file has been saved, you would notice the Orange indicator for changed lines (because they are different from the last saved version of your code file). Cool, isn't it?