Identify tasks vs informational items
Create a new "Priority" color that indicates an informational item, like light grey.
I often create a "task" to keep a group of notes together that can't be forgotten. Often times this is just informational data for projects. When prioritizing tasks the informational tasks look like everything else. A subdued color would visually indicate to me the item is not a task, but only informational.
Thanks for the suggestion. If you consider to mark such items only via color, please vote for https://checkvist.uservoice.com/forums/2121-general/suggestions/443120-add-more-color-options-other-then-just-red-green - probably this is what you need.