Anderson Cooper had difficulty maintaining his composure Thursday night when he appeared to be astonished by Melania Trump’s unconventional black-and-white promo video for her new book for the first time, quipping: “Never seen that before.” “Sorry, it’s the first time I’ve seen that – that’s the weirdest promo I’ve ever seen – like the lighting,” Cooper said before shuddering and telling viewers, “Sorry, I’ve written four books, I’ve never seen a promo like that. Wow.” “I’ve recovered my shock,” he said moments later before introducing his slate of panelists. Want more breaking political news?…