Double-hue syntax themes 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.
A big thanks goes to @braver who did most of the initial language support.
And here some more color variations created by other theme authors.