I have just purchased MacBook Pro Retina 13" (my first Mac) and it currently runs Mavericks. I will be updating to Yosemite when it will be released because of the many cool features it offers. But I HATE the look of it, especially the flat designed dock. Can update to Yosemite, but keep old style look for the dock with 3D icons? If not, are there any apps I can download, that would let me customize the look of the operating system so I can still get all the features of Yosemite and the look I want. Thanks!