Atom One Dark Muted Theme

This theme is a variant of the Atom One Dark Theme

Atom One Dark Javascript example screenshot for easy comparison

Python screenshot

C++ screenshot

Customization

If you are using VSCode 1.12+ versions you can customize the colors to your liking, overriding the ones provided by this theme. More info here.

Custom Font

The original One Dark theme does not use a custom font, for that reason I don't supply a custom font either, but you might be used to see screenshots of the One Dark theme using the Fira Mono font. You can easily customize your settings to use it.
If you download and install the font in your system, you can add this option to have a custom font:

{
    "editor.fontFamily": "YOUR FONT, Menlo, Monaco, 'Courier New', monospace"
}

Credits

Atom One Dark Theme