Preview: Agent 18 SlimShield and Watercolors for iPhone 4 + Watercolors for iPod touch 4G

We’ve seen some pretty creative cases from Agent 18 over the years, but this latest batch is surprisingly quite me-too. Very similar to one another, these plastic shells are nonetheless available under different names: SlimShield and Watercolors for iPhone 4 ($30-$35) and Watercolors for iPod touch 4G ($35). Each shell is made of hard plastic, with a long opening along the bottom for access to the Dock Connector ports and other I/O. On the iPhone 4 models, there’s also an opening on the top edge with a strange little divot dipping into the back. Color and decorative design differences are the only things that set them apart from each other, and the million other plastic shells we’ve seen over the past year for these devices.