The reigning kings of Apple accessory wackness are back with another collection of iffy "where's this stuff actually being sold, again" cases and film, this time for the iPad. Once you get past the packages, which feel like low-quality sandpaper, Maclove's latest designs aren't bad, but not good, either. The iShow Colorful Case is a set of five plastic back covers, each with a very high-gloss finish and an odd little marking in the bottom right corner;…