AppsScriptColor is a Chrome extension for Google Apps Script (GAS) editor that provides a dark color theme and displays folders in the project tree.

In this way, the folders are conveniently displayed to the user, keeping the folder tree from being overwhelming.

If you are using a modern version of the editor, you can download the extension and install it by opening the IDE action menu. Click the 'AppsScript Color' item, then click on 'Add New Item' to add a new extension.

The color themes for Apps Script projects are available in this extension. You can choose from a large selection of different color themes and also customize your own theme with its theme editor feature.