Well, I have been looking up Dolby vision dark vs bright, well, it seems to me the colours get a major boost which I would reckon would look fake, but that maybe just me.This is something I would be interested in learning more about, this is my first Sony TV since the 90s and my first DV set so I am still pretty green when it comes to Understanding the Menu picture functions and I know even less about what is correct with regards to the Dolby Vision eotf. That being said I should have available the tools to investigate (colour meter, calman, hdfury device for DV metadata insertion) with a raspberry pi as a pattern generator. Hopefully over the next few months as my understanding increases, I will be able to have a look.
Here is a YouTube video from a guy with a TCL TV switching from dark to bright and you can clearly see the colour getting boosted:
If you have all that equipment I reckon you good to go and find out more than I can. You will have to let me know if you find anything useful.