As an Advanced Roadmaps user, I want to be able to colour plan view based on "Relaese" field

Issue Summary

Advanced Roadmaps for Jira provide a way to adjust plan view settings by grouping content and further colouring it based on different criteria. As for now (9.15), it is not possible to use "Release" option for colouring at all (disregarding of "group by" criteria):

Reference:Add colors to issues on your Advanced Roadmaps timeline

Options for coloring

You can add color to schedule bars based on the following:

• Project
• Status
• Team
• Components — Only available as an option if the components have been configured.
• Labels — Only available as an option if the labels have been configured.
• Custom fields — Only available if custom fields are enabled and have been configured.
• Issue type — Based on the issue types configured for the projects being used as issue sources.

Suggested Solution

As an Advanced Roadmaps user, I want to be able to colour plan view based on this field in order to enrich the visibility of planning and improve the readability of configured plans. The "Release" field can have multiple values at the same time, so colouring, in this case, might be complex and confusing. However, we already have other examples of multivalue fields ("Components", "Labels") that still could be used for colouring.