Getting custom field settings using jira API

How can I get background color and emojis set in values for custom field? I am using Jira API “/rest/api/3/search?jql=filter=99999”
This gives me the value of custom fields but doesn’t give background color or any emoji used in value.


Jira Cloud now has native support for custom fields with colored backgrounds and Emojis??

When was that feature added @JigarBaraiya?