I am generally OK with the 9.2 Desktop Controller. Yes, the black is a bit forbidding. I have a preference for light themes, such as this forum.
But the one thing that I can't forgive is the design of the Windows 10 task bar icon. I use a black task var. So the Sonos icon background colour (also lack) make it merge into the task bar. That means that all that is visible is a microscopically small "Sonos" text.
This definitely comes into the category of "What were you thinking?!"
This is a usability issue and it needs fixing please