Change Dashboard Cast load screen

[kineticscreen]

Integration name

Google Cast

Link to integration documentation on our website

https://www.home-assistant.io/integrations/cast/

Describe the enhancement

Currently the TV / display shows a bright white loading screen before the dashboard is loaded. It would be great if this could be customised, or if that's not possible perhaps it can be updated to be more compatible with dark mode.

Use cases

Currently setting a dashboard to appear on the TV at either morning or night results in a blinding white screen for 10 seconds before the dashboard (which is itself in dark mode) loads.

Anything else?

No response

[github-actions[bot]]

🏷️ I've automatically added the integration: cast label to help categorize this feature request.

[6apakyda]

Have you added a setting to change the image?