http://valinet6l6tq6d5yohaa6gdsf2ho4qcqcxyj2nahp5kd4z7nsa6ycdqd.onion/2020/09/07/Case-study-Get-dark-command-windows-all-the-time-in-Windows-10.html
Note that this happens only if you use the light theme for applications in Windows 10. If you switch to dark, then all command windows get a nice black title bar, and a dark gray scroll bar. You could enable the dark theme in Settings, but that’s system-wide, meaning that it affects all apps.