When working with code I prefer to use themes with a dark background as I find they’re easier on the eyes. I love Rob Conery’s TextMate Theme and I’ve used it as a basis for my own theme.

The Jystic Theme uses a dark blue background and different colours for classes, interfaces, structs, delegates and enums. In addition to C# highlighting, it also supports xaml, aspx and css.

C#

XAML

ASPX

CSS

Download Jystic Theme

The font I like to use is DejaVu Sans Mono.

Download DejaVu Sans Mono