Hmm... I think the system settings would need an additional switch to enable/disable either change of ambience based on TOH detection or perhaps even disable detection of TOH altogether: I had the white TOH but background set to one of the pictures saved on the device and I removed for a moment the TOH (just to peek inside), and when I placed the TOH back... bzzzt... it automatically set ambience to the whitish TheFirstOne. Sgrunt!