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I've owned white iPhones since they became available in the second design iteration. I loved my white iPhone 4S, but one design detail always bugged me. The tiny plastic strips that separated the external antenna were black, and didn't match the rest of the phone. I always found it odd since less obvious features like the inside of the headphone jack and dock connector were color matched to the body. I always wondered if this drove Jony Ive crazy as it did me.
It's a very minor point, but I'm really happy when I look at my iPhone 5 and see white stripes interrupting the aluminum structure. Call me crazy. I wear it as a badge.
White stripes make me happy.