Add Chroma Key

[schluters]

I was thinking that we could have chroma key, with option to select background color and remove borders.

Examples:
https://github.com/felipenmoura/js-chroma-key/
https://www.youtube.com/watch?v=YdUecM39y1k
https://www.youtube.com/watch?v=N73V5m6BE4M

[diego3g]

But, with chroma key, how the design would be? Today we have an circle and a square version, but with chroma key we would not have a shape neither a border, so I don't know if we should really add this one.

[schluters]

The video doesn't necessarily need a format, as the chroma removes all the background leaving only the instructor.

Example:
https://www.youtube.com/watch?v=y_2rUcnP6J0

[schluters]

Can be used more for presentations!