How to use GitHub

• Please use the 👍 reaction to show that you are affected by the same issue.
• Please don't comment if you have no relevant information to add. It's just extra noise for everyone subscribed to this issue.
• Subscribe to receive notifications on status change and new comments.

Is your feature request related to a problem? Please describe.
Feature

Describe the solution you'd like
In order to add yet another dimension for sorting cards, it would be nice if cards could have an adjustable background color - similar to be able to chose from different post-it colors.

Describe alternatives you've considered
The labels are great but coloring the cards itself is yet another way to highlight things and it comes natural, when you switch from paper to electronic kanban board.

Additional context
Here is a quick mockup: