I've done some investigating. With a Unity8 desktop system running on amd64 using Vivid plus the overlay PPA, the colors stay correct in Slide Show mode. So at this point, it's most definitely an issue specific to armhf and most likely an issue either in Mir of Xmir where the buffers get switched around somehow.
We will need one of those guys to look at this as that is a little out of my realm of knowledge:)
I've done some investigating. With a Unity8 desktop system running on amd64 using Vivid plus the overlay PPA, the colors stay correct in Slide Show mode. So at this point, it's most definitely an issue specific to armhf and most likely an issue either in Mir of Xmir where the buffers get switched around somehow.
We will need one of those guys to look at this as that is a little out of my realm of knowledge:)