I like the 'translucent-ness' of these.
I've recently gotten a new iMac and I've been frustrated over the 'little things'. Like my icons previews have been disappearing. Then I go open a folder and they're stacked on top of each other and all over the place. I've been a Mac girl forever and this is the worst transition I've ever had. At least my Photoshop is running faster than ever. But sometimes my curser disappears. I threw the Finder preference file in the trash and restarted. That helped with the preview problem. It's hard to get any work done around here!