You mean for advertising, showing timetables, etc?
Those are usually "digital signage" panels. Colors may or may not be OK on those, but there are two things to keep in mind:
1. They are outrageously expensive because they're made to be run blindingly bright 24/7.
2. They are less and less dumb, complete with ridiculously long startup times.
The company I work for uses these. And while a few years ago only the higher-priced ones used to feature "smart" features, the "cheaper" ones now have them, too. Now, in our case, we like those because it allows us to control the screens from a central location, and they don't require setting up a Raspberry Pi or similar to show content on them. But "dumb" they are not anymore.
They're typically running some form of Android or Samsung's Tizen. I don't directly use them, so I don't know the details, but a quick glance at Samsung's website seems to show that consumer models use Tizen, too.
