Is it possible to use this add-on in JIRA Agile boards like Backlog? I couldn't find a way to get this working even though it's possible to add extra fields for Backlog and i added the color field.
Unfortunately it is not available yet. But I'm considering to implement it. Which part you like to highlight, the section marked with B or A. If A do you want all issue card to be colored or only the issue key?