             themePaths.push(path.join(themePath, 'styles'))
 
     themePaths.filter (themePath) -> fs.isDirectorySync(themePath)
+
+if Grim.includeDeprecatedAPIs
+  EmitterMixin = require('emissary').Emitter
+  EmitterMixin.includeInto(ThemeManager)
+
+  ThemeManager::on = (eventName) ->
+    switch eventName
+      when 'reloaded'
+        Grim.deprecate 'Use ThemeManager::onDidChangeActiveThemes instead'
+      when 'stylesheet-added'
+        Grim.deprecate 'Use ThemeManager::onDidAddStylesheet instead'
+      when 'stylesheet-removed'
+        Grim.deprecate 'Use ThemeManager::onDidRemoveStylesheet instead'
+      when 'stylesheet-updated'
+        Grim.deprecate 'Use ThemeManager::onDidUpdateStylesheet instead'
+      when 'stylesheets-changed'
+        Grim.deprecate 'Use ThemeManager::onDidChangeStylesheets instead'
+      else
+        Grim.deprecate 'ThemeManager::on is deprecated. Use event subscription methods instead.'
+    EmitterMixin::on.apply(this, arguments)
+
+  ThemeManager::onDidReloadAll = (callback) ->
+    Grim.deprecate("Use `::onDidChangeActiveThemes` instead.")
+    @onDidChangeActiveThemes(callback)
+
+  ThemeManager::onDidAddStylesheet = (callback) ->
+    Grim.deprecate("Use atom.styles.onDidAddStyleElement instead")
+    @emitter.on 'did-add-stylesheet', callback
+
+  ThemeManager::onDidRemoveStylesheet = (callback) ->
+    Grim.deprecate("Use atom.styles.onDidRemoveStyleElement instead")
+    @emitter.on 'did-remove-stylesheet', callback
+
+  ThemeManager::onDidUpdateStylesheet = (callback) ->
+    Grim.deprecate("Use atom.styles.onDidUpdateStyleElement instead")
+    @emitter.on 'did-update-stylesheet', callback
+
+  ThemeManager::onDidChangeStylesheets = (callback) ->
+    Grim.deprecate("Use atom.styles.onDidAdd/RemoveStyleElement instead")
+    @emitter.on 'did-change-stylesheets', callback
+
+  ThemeManager::getUserStylesheetPath = ->
+    Grim.deprecate("Call atom.styles.getUserStyleSheetPath() instead")
+    atom.styles.getUserStyleSheetPath()
+
+  ThemeManager::getLoadedNames = ->
+    Grim.deprecate("Use `::getLoadedThemeNames` instead.")
+    @getLoadedThemeNames()
+
+  ThemeManager::getActiveNames = ->
+    Grim.deprecate("Use `::getActiveThemeNames` instead.")
+    @getActiveThemeNames()
+
+  ThemeManager::setEnabledThemes = (enabledThemeNames) ->
+    Grim.deprecate("Use `atom.config.set('core.themes', arrayOfThemeNames)` instead")
+    atom.config.set('core.themes', enabledThemeNames)

  getLoadedThemeNames: ->
    theme.name for theme in @getLoadedThemes()

  getLoadedNames: ->
    Grim.deprecate("Use `::getLoadedThemeNames` instead.")
    @getLoadedThemeNames()

  # Public: Get an array of all the loaded themes.
  getLoadedThemes: ->
    pack for pack in @packageManager.getLoadedPackages() when pack.isTheme()

  styleElementAdded: (styleElement) ->
    {sheet} = styleElement
    @sheetsByStyleElement.set(styleElement, sheet)
    @emit 'stylesheet-added', sheet if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-add-stylesheet', sheet
    @emit 'stylesheets-changed' if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-change-stylesheets'

  styleElementRemoved: (styleElement) ->
    sheet = @sheetsByStyleElement.get(styleElement)
    @emit 'stylesheet-removed', sheet if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-remove-stylesheet', sheet
    @emit 'stylesheets-changed' if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-change-stylesheets'

  styleElementUpdated: ({sheet}) ->
    @emit 'stylesheet-removed', sheet if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-remove-stylesheet', sheet
    @emit 'stylesheet-added', sheet if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-add-stylesheet', sheet
    @emit 'stylesheets-changed' if Grim.includeDeprecatedAPIs
    @emitter.emit 'did-change-stylesheets'

  ###
