Open source theme config used on mui.com

[AlexHodo]

• I have searched the issues of this repository and believe that this is not a duplicate.

Summary 💡

The theme used on mui.com looks great. It would be awesome if we could use it in our own apps.

Examples 🌈

The theme config used on mui.com doesn't seem to be found in the docs. It should be available in the How to customize page.

Motivation 🔦

It would help us create beautiful apps faster.

[AlexHodo]

It seems that the custom theme is indeed open-source as mentioned here. For those looking for the custom theme config, call JSON.stringify(theme) in the browser console.