ReSharper offers a rich set of syntax highlighting for various C# code items. You can customize them in Visual Studio.NET Options dialog, using the tab Fonts and Colors.
- Select Tools | Options in the main menu;
- Select Environment | Fonts and Colors in the lefthand view;
- In Display items, scroll down to ReSharper (when that view has focus, press Ctrl + R to jump to item names starting with "r"). Browse the list to review and/or edit specific items' formatting and highlighting.
By default, special highlighting of identifiers is turned off. See the Options - Highlighting tab and topic to toggle this option.