u/3a1m3r

I hope this might be useful for others, so sharing it here.

Repo: https://github.com/FlourishLifeTech/sp-task-color-plugin

It adds background colors to tasks, including tag-based coloring, search/filter/sort in the side panel, a palette picker with favorite colors, and a task picker for quick assignment. Colors are stored in task notes, so they survive sync and export.

Please let me know if it works for you, and if you run into any issues or have any feedback.