Must be a software error... it's been rumbling for a bit. I was wondering whether people were colour blind . Wonder if that's the software in the infotainment unit which needs fixing or in another module "ambient light module" or something. Feels like an infotainment unit update is required to get it sorted or central electrics. Factory resetting I guess is the other option and being told not to touch it till it's fixed .Having spoken to our dealer, they have a car with exactly the same issue (on theirs, the ambient colour was red but then switched to white and can't be changed back again). They are raising the question directly with Seat.