To say that we were surprised by the latest Speck case collaboration -- the Speck x Guinness St. Patrick's Day iPhone 4 Case -- would be an understatement. This limited edition version of Speck's SeeThru Case for iPhone 4 includes a two-toned custom insert with an off-white top and a black bottom, plus a gold Guinness harp logo inked onto the back. Other interesting features include an ultra-oversized camera hole, a universal GSM/CDMA ringer switch…
