How can I decrease the ringtone/notification volume on my Oppo Find 7? I recently got this device and so far ColorOS is virtually indistinguishable from stock Android.  The only problem is that the ringer and notification sound are insanely loud, even on the very lowest setting before silent, as is the System volume.  Is there any way to fix this?
Alright, I've figured out that you can do this by rooting and editing the system table in settings.db (/data/data/com/android.providers.settings/databases).  I used SQLite Editor for this.

I am not completely certain which of the two did the trick, but I edited both volume_system and volume_notification and now my texts are a reasonable volume.