Each key may save arbitrary information associated with it. In eclypse you achieve this by utilizing custom attributes as shown below:
File Export Process
If your project type is Localizable Assets, then you may also use custom attributes in your dynamic path during file export. For example:
| /MyProject/Assets/{color_tag}/{file_name}.{file_extension} |
| /MyProject/Assets/{path_to_file}/{file_name}.{file_extension} |