It's to point out the difference.
If you think it makes it sound worse, perhaps that's because it's how you see it? How would you summarise instead?
Zara, btw, isn't the only equestrian who contributes to design and is brand ambassador for Musto, who also have well-known sailors on the books. Windsor wine is a colour across their whole range, not Zara specific.
Musto also held royal warrants from the late Queen and Prince Phillip - they're a well established company .
The other colours this season are black (which Zara models on the website twice, compared to one pic in the wine colour), true red, navy, white, sai, astro dust, field green, canyon suns, dark cobalt and more. As well as giving names to some of their colours, they seem to go in for place names on garments too, names associated with riding or sailing.