Letters avatars for members without profile photo

Hello, would like to suggest a feature or plugin idea,
The idea is to generate profiles photo for members who dont upload a photo, it generate simply based on their first and last name with a random background color. There is a nice plugin for wordpress and many other open source projets :

http://codepen.io/leecrossley/pen/CBHca
https://wordpress.org/plugins/wp-first-letter-avatar/
http://uttesh.com/ngletteravatar/