Your Everest would have come brand-new with a three-year/100,000km warranty which has now well and truly expired. So you can forget about Ford contributing to the cost of repairs. Roof racks cop a pretty hard life in some cases, and damage to their coating or paint is not uncommon. Even if it's just the effects of UV radiation (rather than physical damage) roof racks are in the direct firing line of the sun's rays for a lot of the time. The best advice would be to get an automotive spray painter to repaint the roof rails in a durable product that matches the original finish. This shouldn't be difficult for any professional shop and would return the car's appearance to new, providing the rails are the only blemished areas.