The first season is all black abd white but don't let that stop you. This series is great, well, at least the first season is great. Many episodes were directed by Richard Donner (the Omen, Superman, Lethal Weapon). One episode was directed by John Newland (One Step Beyond). The legion of guest stars is astounding. Willian Shatner and Leonard Nimoy together in an episode long before Star Trek. Richard Kiel (Jaws). Sharon Tate, Kurt Russel, the list just goes on and on.
Man from Uncle reminds me of the English series The Avengers. Napoleon Solo is a bit like John Steed, an anachronistic representative of a earlier era, always well dressed, but a very professional spy. Another parallel is how a big time spy agency sends just two agents into situations that would seem to benefit from much more man power. And like The Avengers, Man from Uncle eventually self-destructed by getting too silly. But that happens later. Season one is very good.
It's a period piece now, showing life in the early sixties and this is part of the charm. Because it was intended fot TV in the 60's, the violence is kept to a minimum. Don't expect the kind of violence that you see on today's show, it isn't there. Man From Uncle, Season 1 is one of the best TV series from the early 60's offered by Amazon. I highly recommend it.