Syntax Highlighting
ReSharper extends the default Visual Studio's symbol highlighting. Additionally, it highlights fields, local variables, types, and other identifier with configurable colors. For example, ReSharper syntax highlighting allows you to easily distinguish between local variables and fields in your code.
ReSharper syntax highlighting for C# with default colors looks as follows:

To toggle ReSharper syntax highlighting
Select in the main menu or press Alt+R,,O, then choose on the left.
Use the Color Identifiers checkbox to enable or disable ReSharper syntax highlighting.
Click Save to apply the modifications and let ReSharper choose where to save them, or save the modifications to a specific settings layer using the Save To list. For more information, see manage and share resharper settings.
For guidelines on how to configure fonts and colors for ReSharper syntax highlighting, see Configure Fonts and Colors.
This feature is supported in the following languages and technologies:
The instructions and examples given here address the use of the feature in C#. For details specific to other languages, see corresponding topics in the ReSharper by Language section.