Dark theme option for SONOS controller

I sometimes use the SONOS controller (on a tablet) in environments where the room lights have been dimmed at night and so find the current white background on the contoller very bright and intrusive.

Am I missing a setting that can change this, or is there a work around available?

If not, are there any plans for SONOS to introduce Skins, or at the very least a dark theme option?

Thanks