I'm starting a theme that makes iOS look a little bit more like OS X. Less extreme colors that match Yosemite, and a little bit more shading and shadows. Some of the changes are extremely subtle like the Maps icon. I have 8.1.3 on my my phone so I can't jailbreak, but I figured I'd share it here. Most of the icons are made out of vector tracings that I collected from iOS, and applied a gradient and shadow to look like Yosemite. Others, like Settings, I used the icons from the Mac app and tweaked it a bit to fit in the icon.