Adam Clarke on Genesis 30:32

I will pass through all thy flock - צאן tson, implying, as we have before seen, all smaller cattle, such as sheep, goats, etc.

All the speckled and spotted cattle - שה seh, which we translate cattle, signifies the young either of sheep or goats, what we call a lamb or a kid. Speckled, נקד nakod, signifies interspersed with variously colored spots.

Spotted - טלוא talu, spotted with large spot either of the same or different colors, from טלא tala, to patch, to make party-colored or patch-work; see Eze 16:16. I have never seen such sheep as are here described but in the islands of Zetland. There I have seen the most beautiful brown, or fine chocolate color among the sheep; and several of the ring-streaked, spotted, speckled, and piebald among the same; and some of the latter description I have brought over, and can exhibit a specimen of Jacob's flock brought from the North Seas, feeding in Middlesex.

And all the brown - חום chum. I should rather suppose this to signify a lively brown, as the root signifies to be warm or hot.