This theme is based on Duotone Themes by Simurai for Atom.
“DuoTone themes use only 2 hues (7 shades in total). It tones down less important parts (like punctuation and brackets) and highlights only the important ones. This leads to a more calm color scheme, but still lets you find the stuff you're looking for.”
Theme colors are brown – crimson-red, pink and yellow-ocre, see a preview here on Base2Tone
DuoTone themes are optimized for many languages:
C, Clojure, CoffeeScript, C#, CSS, GF Markdown, Go, Haskell, HTML, Java, JavaScript, JSON, Less, Perl, PHP, Python, Ruby, SASS, SCSS, Stylus, XML, YAML...
More optimizations to come. See the growing list of all languages.
More DuoTone themes.