I've only just noticed those in iTunes 4.7.1. I have to say, the OS is heading back towards the creaky Mac OS 9 look - toned down from the earlier wonders of Aqua. (My opinion, of coursechameeeleon said:Here to Stay:
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- the new light grey bars seen in the iApps (currently one's replaced the old Party Shuffle controls in iTunes 4.7.1 and one also houses the action buttons in iPhoto 5 now) will be migrated into Safari, Address Book, etc. Not only do they look very clean, but the grey colour has close ties to the background being used for Spotlight, adding SOME consistency