code: public static void setDefaultTheme(int theme) {
          ThemeManager._DEFAULT_THEME = theme;
          if (theme < _START_RESOURCES_ID) {
              ThemeManager._DEFAULT_THEME &= ThemeManager._THEME_MASK;
          }
      }
docs: Set default theme. May be theme resource instead flags, but it not
  recommend.
  
  @param theme Theme
  @see #modifyDefaultTheme(int)
  @see #modifyDefaultThemeClear(int)
  @see #getDefaultTheme()