HP/Compaq :: LCD "Light Bleeding"

I bought an HP laptop (d6 series I believe) back in June, and I've been having some issues with it lately.

The laptop's LCD has (what the FS tech's called it at least) "light bleeding". Basically, on the left and right edges of my laptop the screen is faded, kind of orange and pink tinted as well. The best way to see this is using Excel, you can see the lines on the cell grid fade as they get closer to the screen. It's not really a huge deal as far as usability is concerned, but I bought their extended warranty (I know...never again now that I realized my Visa has one) and I figure I may as well get it fixed (especially since I want to sell it and get a smaller laptop).

Anyways, they're telling me it's pressure damage, which I KNOW isn't true. I treat my laptop well, and I had an LG for 3 years that was treated way worse with no signs of damage to the screen. My personal opinion is that it's more likely heat damage. The laptop gets very hot (which is HP's fault, not mine), and I think that may be what's doing it to the LCD. Has anyone else experienced this? My laptop has been shipped to HP for them to take a look, but I feel like they will probably try and get out of fixing it if they can (seeing as FS has already done so). If they return it back and tell me its my fault, any ideas what I should do? I know this isn't physical damage caused by me, and I don't want to have to pay for a new screen because HP built a laptop that is cooking itself. Should I go yell at FS (I think I'd need some factual backup for this...) or just skip around and see if my credit card will cover the warranty?