Alienware 14 keyboard cover

Hi 

I didn't know where else I should have posted my problem. It's been a week that I am looking for a cover for my alienware 14 keyboard but I can't find anything, I live in japan and so I tried some pc shops but non had a cover for alienware pcs at all. In internet there isn't any dedicated page found for what keyboard cover to look for.

Please can anyone tell me where to get and "what" to get??