As a user, I would like to assign different background colors for different tasks so that they are easier to distinguish visually in the task board

[hebern]

The color could simply be assigned as metadata using a key:value tag, for example

#TODO add functionality do assign background colors c:red

Ideally, the color tag would be optional.
I guess it would also be possible to configure colors based on already existing tags (e.g. +project), but using a separate key:value pair would allow the user to employ individual strategies for assigning colors, e.g. by priority, by due date, by project, or any other context.

[jronallo]

At one point I had an extension that was looking for all due dates like due:2018-03-23, parsing the date, comparing to the current date, and then coloring yellow or red based on whether the due date was approaching or past.