A clone of Original Instagram App in Dark Mode Video Sample here: https://www.linkedin.com/posts/niharmore_androiddevelopment-androiddev-androiddeveloper-activity-6694842712589520896-PP-x
Final built Apk v1.0 can be found here: https://github.com/nihar-more/InstaClone_Dark/blob/master/Final%20Build/Insta_Dark.apk
NOTE - Application work is still in progress its not a complete build few additions like database, tabs and features are pending.
Some Sample Screenshots-