I'm not sure what it is, but something about the colour palette used in the examples shown feels a bit off to my untrained eyes.

Is there actually a job market for pure UI designers? I often see UI as only a small part of job description that involves other non-art-related technical skills.

It feels like the market is already saturated with people who can do UI design and a lot more (or the other way around for that matter). I am glad that the author managed to find internship as a UI designer and I'm aware that the author plans "to extend into UX", but the emphasis on UI design as a career change for "traditional" artists sounds... dangerous.

Edit: removed confusing parenthetical.