Welcome to the community!
I think this needs some coding to be done manually!
Here are the resources
https://stackoverflow.com/questions/15523100/google-map-api-v3-change-marker-icon-on-click
https://developer.atlassian.com/cloud/trello/
https://help.trello.com/article/756-trello-api-documentation
Regards,
Soumyadeep
Unfortunately support haven't resolve this problem for months since we made a suggestion for changing colors of pins on the map. It would help a lot.
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