Jesus is Black?

He was an ancient jew, so he probably looked like other ancient jews. In the Dura Europos synagouge, you have depictions of ancient jews by ancient jews, it has depictions of jews, most look brown skinned with black hair.
I do think it's highly possible that jesus had subsaharan african in him, as Jews were recorded to have mixed with black africans. Moses had an ethiopian wife (who was from Kush; the word ethiopian as it was translated is just from a greek word used to describe black folk). King Solomon had a black wife (in the song of solomon she literally says "I am black" she described solomon as "white and ruddy").
I do think the first gentile (or one of the first) to convert to christianity was black; the ehtiopian eunuch in the book of acts who Peter baptised.

As far as Jesus being Yt? Well he definitely wasn't white in the sense of white meaning European, tho he could have had light skin. In Lamentations, it describes the nazarites saying "Her Nazarites were purer than snow, they were whiter than milk, they were more ruddy in body than rubies, their polishing was of sapphire:" Tho honestly, jesus wasn't ethnically from nazareth; his mom was from Galilee.

In short, probably not, but possibly. He probably looked like a safardic jew.