The following preferences can be changed on the 
     General > Editors >
    Text Editors > Quick Diff preference page.
| 
            Option
           | 
            Description
           | 
            Default
           | 
|---|---|---|
| 
            Enable quick diff | 
            This option will enable or disable the quick diff option.
           | 
            On
           | 
| Show differences in overview ruler | This option will show differences in the overview ruler. | Off | 
| 
            Colors - Changes | This option controls the color of changes. | |
| 
            Colors - Additions | 
            This option controls the color of additions. | |
| 
            Colors - Deletions | 
            This option controls the color of deletions. | |
| Use this reference source | This option sets which reference to use as the base for generating quick diff comparisons. Options are: 
 | Version on Disk |