iSkins' Solo line stretches back years, so it's not surprising to see it come to the iPad mini in the form of Solo FX ($40). The rubbery playthrough-style case has raised waves on both sides of the bottom, and a textured pattern covering the entire outer surface. It comes in five colors, each offering button protection and a flip-open cover for the Lightning port. Notably, iSkin includes a sheet of its ProTouch Titan High-Impact Screen Film, which…