Finally, Vaja has released iPhone cases to get excited about! The new iVolution Top Holster ($70 and up) and iVolution Top SP Holster ($80 and up) thoroughly update the classic "flip-open holster" case design with beautiful Caterina leather and attractive curves: the single-colored Top Holster comes in your choice of 40 colors, while the racing striped Top SP Holster can be customized with two of your preferred colors from a set of 40. Compatible…