Duotones
Based on DuoTone themes by Simurai for Atom.
Go to demopage
“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.”
function foo(bar) {
var a = 42,
b = 'Prism';
return a + bar(b);
}
Atelier Schemes
Atelier Schemes, demotiles for Dune, syntax highlighting colorscheme

Screenshot Sulphurpool – dark version – in Vim
Prism
Colorschemes for Prism: demopage

screenshot of styleswitcher for Prism themes
Chrome DevTools
Solarized Light theme demopage

Screenshot of Chrome DevTools (undocked), themed with Solarized-Light
Colorscheme Lab
Try Colorscheme Lab

Screenshot of Colorscheme Lab, a Code Syntax Highlighter Builder
- Colorscheme Lab on CodePen
See the Pen Colorscheme Lab – with Sass Variables by Bram de Haan (@atelierbram) on CodePen
- Colorscheme Lab as Github Gist
- More Themes for Web Developer's Toys