I wanted to see the effect of spectral arrows, so i went to my test world, used an egg of zombie, placed a stack of spectral arrows in the case "7" (i'm french, don't know how to name it), took an enchanted bow, and shot the zombie.

The zombie became all white, and everything else black. (screen)

I don't know how to reproduce it, i saw videos with people having another effect, surely the normal one. (video i saw, at 35s: https://www.youtube.com/watch?v=JjMo9BKwLrU )

PS: same problem without texture pack.