Highlight the unopened row

Is there any way to Highlight the unopened row in the table viewwith format rules
Suggest any idea to achieve this??

You can do that with a custom action. Instead of using normal row select, it would trigger an Event action that first writes a value like “Opened” to your record and then open the detail view. Then you can set a format rule with that status field.

Though it’s not bullet proof when two users open the app at the same and the newest data is not synced yet.