I have read that it’s possible that Jesus had blue or green eyes, because people from the Galilee area at the time were noted for that. Of course there’s no way to know if it’s so, but it’s an interesting theory.
The Roman historian Tacitus writing about mid century AD had spoken to witnesses who had seen Jesus and wrote a description of Jesus as being about 69 inches in height, 175 pounds, and having blue grey eyes. He was said to be a little taller than average but otherwise had no other outstanding features looking like “most common male jews” of the period. Tacitus had been writing a work describing the various religions of the Empire as part of a “history” series of books that only a few volumes had survived, interestingly enough the work in which this description appeared. Tacitus was said to have met Mary for example.
So you are right about the plausibility of Christ having blue or green eyes.