This feature depends on being able to [insert a vertical line annotation](https://github.com/elastic/kibana/issues/87564) first. Once a user is in edit mode for Lens, they can now drag a selection to create a rectangle. Each rectangle annotation has a color property: <img width="825" alt="Screen Shot 2021-01-04 at 3 16 57 PM" src="https://user-images.githubusercontent.com/666475/103813827-b3314380-502e-11eb-91aa-cb810636e484.png">
This feature depends on being able to insert a vertical line annotation first.
Once a user is in edit mode for Lens, they can now drag a selection to create a rectangle. Each rectangle annotation has a color property: