This project is now archived, since vscode provides an API for customizing themes according to the system theme.
Find an example of vscode settings below.
{
"window.autoDetectColorScheme": true,
"workbench.preferredDarkColorTheme": "GitHub Dark",
"workbench.preferredLightColorTheme": "GitHub Light"
}
ThemeSwitcher provides a shortcut to switch between a dark and light theme. Just hit CTRL+ALT+T (⌘+⌥+T) to change the current theme.
This extension can be installed from here.