Swiss leather company Lucrin has released the Crocodile Style Leather Case for iPhone 4 ($73 and up). Composed of two glossy, crocodile-textured leather halves, the extremely simple sleeve has just enough give to fit an otherwise unadorned phone. Lining the inside is a complementary soft velour fabric. Lucrin offers the case in black, dark burgundy, tan, dark blue, and fuchsia. Customization is offered for $33 to $53, including everything from gold…