I don't remember color holds---I look it up---but today's "new toy" is AI generated art.  Professional illustrators are in an absolute tizzy this year because they are certain robots will replace them in the near future.

I'm not sure where Mr. Byrne stands on Frank Miller's work, but here's an article written my a fellow who approached DC to tell them that were using the entirely wrong STYLE of coloring for Miller's recent work.