Background color does not support 'NO COLOR' option

[vardan0107]

Please describe the a concise description and fill out the details below. It will help others efficiently understand your request and get to an answer instead of repeated back and forth. Providing a minimal, complete and verifiable example will further increase your chances that someone can help.

Steps for Reproduction

1. Visit: quilljs.com
2. Step Two: in quill page 3 slide show backgroud change after slecting any text.
3. Step Three: it does not have No Color Option.
   

Expected behavior: Required No Color button which will remove color n make text transparent backgroud .

Actual behavior: it does not have No Color button n does not have that functionality

Platforms: all platforms

Include browser, operating system and respective versions

Version: 2.0.2

Run Quill.version to find out

[fahadyaseen001]

I can work on this issue.Is there anyone who is working on this issue? If not can u kindly assign me the issue so that I can start working on it.Thanks