Sublime Text 3 软件包通过安装包控制 https://packagecontrol.io默认情况下存储为.sublime-packagezip 文件在你的Packages目录，其位置取决于您的操作系统：
- Linux:
~/.config/sublime-text-3/Packages
- OS X:
~/Library/Application Support/Sublime Text 3/Packages
- Windows 常规安装：
C:\Users\YourUserName\AppData\Roaming\Sublime Text 3\Packages
- Windows 便携式安装：
InstallationFolder\Sublime Text 3\Data\Packages
The easiest way to edit them is to install PackageResourceViewer https://sublime.wbond.net/packages/PackageResourceViewer from Package Control. Once installed, open the Command Palette with ⌘ShiftP (OS X) or CtrlShiftP (Windows/Linux) and type in prv to access the PackageResourceViewer options.
Select Extract Package, then scroll down to Theme - itg.flat and hit Enter. This will extract the package into your Packages folder, which can be easily accessed via your operating system's file manager (Finder, Windows Explorer, Nautilus, etc.) by selecting Sublime Text → Preferences → Browse Packages… (this is for OS X, Windows and Linux have a separate Preferences menu). Any edits to the files in this directory will override the files contained in the Installed Packages/Theme - itg.flat.sublime-package file.
如果您只想编辑单个文件，请在输入后prv进入命令面板，选择PackageResourceViewer: Open Resource反而。然后，您可以浏览您的包并选择您想要编辑的文件 -Theme - itg.flat/itg.flat.dark.sublime-theme， 例如。编辑所选文件后，它们将保存在Packages目录，
但是，请记住，如果将来更新软件包，则更改将不适用，因为您已通过将文件解压到以下位置来覆盖它们Packages。如果您选择的话，情况并非如此Open Resource- 只有您选择编辑和保存的文件才会存储在Packages，并且它们将覆盖中的同名文件.sublime-package档案。如果将来更新包，包含您编辑的文件仍将覆盖存档中的相同文件，但其余文件将被更新。例如，如果您编辑itg.flat.dark.sublime-theme via Open Resource，当整个Theme - itg.flat更新后，您的自定义文件将覆盖包存档中的同名文件，但所有其他文件都将应用更新后的更改。
