The GUI is affect while playing these clips, like the video OSD with play and pause buttons, but goes back to normal when the clip ends. here’s a picture of the general effect from another user.
I intentionally re-encoded with wrong mastering display metadata (MediaInfo labels it Mastering display color primaries) that should clearly change the way the video looks if it was being applied directly. I don’t really know how these numbers actually work, and when I slapped an extra zero on them I ended up wrapping around the 16bit value so “doctorG” and “doctorWP” ended up with lower values rather than higher, but these should be helpful for a quick and obvious look at how a display or device utilizes them.
MediaInfo shows the expected info for all of these, so no, I don’t think it can. I wonder if potentially all remuxes are affected, and the extent of the dimness comes down to other factors of the video.
Edit: sorry for putting that out there, testing with The Matrix and Pacific Rim convinces me that’s not true. Those remuxes are good on the Vero, and I ripped Pacific Rim from my disc with MakeMKV v1.12.0.