They are being somewhat updated but I do see a lot of black and white opera and classical clips on Classic Arts Showcase. Which speaking of CAS, when did it first hit the air? Early 1990s I suppose?
1994, according to its excellent website, www.classicartsshowcase.org, which I just visited. It streams online continuously, free of charge, and I've learned that its programming consists of an eight-hour collection of clips, looped for a full week before being replaced by a new assortment of performances, which explains why it is used as off-hours filler rather than as a full-service cable channel. An interesting operation with an interesting back story.