How to customize a plugin whilst maintaining ability to upgrade
Many plugins use /wp-content/custom-plugin-folder/ to store customized plugin data (WPTouch comes to mind). Just use the constants WP_CONTENT_URL and WP_CONTENT_DIR Docs to check for the existence of your folder and retrieve any available skins. The following article, although not directly related to this Question, explains the importance for plugins/themes to search for translations first in … Read more