SteelcaseLeap Camel Fabric Chair

Is this chair Steelcase prodcut #46216179? Does it have 4-Way Adjustable Arms (height, width, pivot and depth)

Do steelcase leap chairs from valencia seating still have the full steelcase warranty?

I notice this chair in black is a lot cheaper compared to the other colors. Why is this?

The chair listed as "black/black" and sold by amazon has a lower price. is there a reason for this (like it does not include armrests or is not new)?)