Samsung doesn't have control of Dark Themes in third party applications (only specific apps they develop). The mode set is strictly determined by the developer of each app. Give it time. Google Play Store just implemented the dark theme not long ago. Before you know it dark mode will become a common theme in app development.
Thank you very much for your suggestion. Your suggestion has been communicated to the developer and the development project manager is reviewing the content. After reviewing your suggestions, we will apply them to the official version if your proposal matches our concept.
