speck makes a candyshell for the inspire that makes it flush, its what im using on my phone, it comes in a dark gray/black and i like it alot, i had the candyshell on all my iPhones in the past.
i think the case is really hard to come by because when we got the shipment in, I automatically had to buy it and there were only three in the shipment. the other two were sold quick along with the phone, look out for it in your at&t store. cost 35 bucks