Yes...when I look up brown leghorn chicks they seem to be brown as well...These were all yellow chicks but have a pretty brown and white stripe on the wings coming out.
From what I can see, the chick looks like it's going to mature as something red. Those white specks aren't going to last, they're juvenile plumage that will change as the bird matures.
What color were the eggs? White-white or off white/beige/tan or ?