As a current Gen Z applying to jobs, I think this trend is very minor and depends on the industry. Anecdotally, in all the tech career fairs and networking events/resume drops I've been to, 95% of resumes follow the traditional format without a hint of color. The other 5% are people who downloaded a flashy template for the first time and don't know what they're doing. For designers, I think it's reasonable to have a "unique" resume design, but for other non-visual jobs it's just in poor taste.