Add wagtail-color-panel to widgets (#142)

README.md

@@ -81,6 +81,7 @@ Awesome Wagtail [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38
 - [wagtail-instance-selector](https://github.com/ixc/wagtail-instance-selector) - A `ForeignKey` widget to create and select related items. Similar to Django's `raw_id_fields`.
 - [wagtail-generic-choooser](https://github.com/wagtail/wagtail-generic-chooser) - provides base classes for building chooser popups and form widgets for the Wagtail admin, matching the look and feel of Wagtail's built-in choosers for pages, documents, snippets and images.
 - [wagtail-multi-upload](https://github.com/spapas/wagtail-multi-upload) - allows uploading of multiple related images for a page.
+- [wagtail-color-panel](https://github.com/marteinn/wagtail-color-panel) - Introduces panels for selecting colors in Wagtail.
 
 ### StreamField