Levi's x Opening Ceremony "Cords" collection

I was looking for a good corduroy trouser for a while now, and my dream finally came true with this collaboration between Levi's and New York's label Opening Ceremony. The two brands have created a micro collection called "Cords", and I have to say I like all the clothes in it. Even though I'm not digging certain colorways (I am not really sure about white corduroy...), I find the pieces they choosed to work on interesting and smartly used. I am just a bit upset about one thing : why do we need a collab/special edition to get simple, unicolor and basic corduroy pieces like these?
Anyway, I just ordered a blue trouser, and I can't wait for it to come to my house...