toggle color scheme

sublime-keymap

[
  { "keys": ["ctrl+super+h"], "command": "toggle_color_scheme",
    "args": {
      "dark_color_scheme": "Packages/Color Scheme - Default/Monokai.tmTheme",
    }
  }
  ]

ToggleColorScheme.py

import sublime, sublime_plugin

class ToggleColorSchemeCommand(sublime_plugin.TextCommand):

    def run(self, edit, **args):
        light_scheme = "Packages/User/Solarized (Light) (SL).tmTheme"
        dark_scheme  = args["dark_color_scheme"]

        settings = sublime.load_settings('Preferences.sublime-settings')
        current_scheme = settings.get('color_scheme')

        if current_scheme == light_scheme:
            settings.set('color_scheme', dark_scheme)
        else:
            settings.set('color_scheme', light_scheme)

        sublime.save_settings('Preferences.sublime-settings')