Cycle between Sublime themes and color schemes. Based on http://stackoverflow.com/questions/13121687/keyboard-shortcut-to-change-color-scheme-in-sublime-text-2

Default (OSX).sublime-keymap

# Can be accessed via Preferences > Key Bindings - User

[
  {
    "keys": ["super+shift+o"], "command": "toggle_color_scheme",
    "args":
    {
      "color_scheme_1": "Packages/Solarized Color Scheme/Solarized (dark).tmTheme",
      "color_scheme_2": "Packages/Solarized Color Scheme/Solarized (light).tmTheme",
      "theme1": "Sodarized Dark 3.sublime-theme",
      "theme2": "Sodarized Light 3.sublime-theme"
    }
  }
]

toggle_color_scheme_command.py

# Create new plugin via Tools > New Plugin...

import sublime, sublime_plugin

class ToggleColorSchemeCommand(sublime_plugin.TextCommand):
  def run(self, edit, **args):
    scheme1, scheme2 = args["color_scheme_1"], args["color_scheme_2"]
    theme1, theme2   = args["theme1"], args["theme2"]

    settings = sublime.load_settings('Preferences.sublime-settings')

    current_scheme = settings.get("color_scheme")
    current_theme  = settings.get("theme")

    new_scheme = scheme1 if current_scheme == scheme2 else scheme2
    new_theme  = theme1  if current_theme  == theme2  else theme2

    settings.set("color_scheme", new_scheme)
    settings.set("theme", new_theme)