Emerald
Even though we're not yet in Android 16 QPR3, maybe it could be this?
Android 16 QPR3 adds a blue icon in the status bar that you can tap to see which apps are accessing your device’s location.
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Android 16 QPR3 rectifies this by enabling the expandable location indicator. Unlike the solid green background used for camera and microphone alerts, the location indicator features a solid blue background (though the system reverts to green if multiple permissions are actively being used). More importantly, the “Microphone, Camera & Location” dialog now correctly lists the specific apps accessing your location. Google briefly tested this functionality in Android 13 but never rolled it out publicly.
source: https://www.androidauthority.com/android-16-qpr3-location-indicator-3626212/