In Preferences > Preview could it be an option for background color to be a dynamic color that's based on the color tag of the current photo? When I do multiple culls on the same gallery, it is hard to easily see the color tag of a photo when the indicator is in the far corner. Sometimes I'll retag a photo I've already processed in mistake since I can't quickly see the color tag. I understand this may be a bit much visually or on system resources but I think the option would be very useful. Screenshot attached of a demo...if a color tag was red, red background.