Automatically swich theme in Atom whether it is in dev mode or based on project dir name.

autoSwitchTheme.coffee

# use this in your init.coffee

themeSets =
  "vim-mode": ["atom-light-ui", "atom-light-syntax"]
  "atom": ["atom-dark-ui", "monokai"]
  "_devMode": ["one-dark-ui", "one-dark-syntax"]
  "_default": ["atom-dark-ui", "base16-tomorrow-dark-theme"]

path = require 'path'
autoSwitchTheme = ->
  theme = null
  if atom.inDevMode()
    theme = themeSet['_devMode']
  else
    for _path in atom.project.getPaths()
      break if theme = themeSets[path.basename(_path)]
  
  theme = "_default" unless theme
  atom.config.set('core.themes', theme)

autoSwitchTheme()