I just bought two 8 GB USB flash drives, SanDisk Cruzer Fit (http://www.sandisk.com/products/usb/drives/cruzer-fit/), they are exactly the same. Since I planned using them as Mac OS X install drives, during a Mac OS X installation (booted from DVD) I erased and formatted them.
After erase and format, one of the drives has an orange/yellowish icon and the other a white icon. Even after I restart my Mac and boot into the installation again and format them again(in different or same order), one(the same one) always gets this orange icon. And that one with the orange icon also has a peculiar issue when I click on the eject button. It does not eject. The partition gets unmounted but that is it. It just stays grayed out and never disappears from disk utility menu. The one with the white icon ejects normally.
I've tested the same drive(orange one) under Windows and it behaves perfectly normal. Safe removal works as expected. I've run some tests and everything appears to function as it should. So it only bothers me why is this difference on the mac. What does this orange icon represent anyway? Does it mean something?
Here are two photo-screenshots i snapped from one and then from the other drive:
Accidentally I found out that I've kept the packings from these drives. And only now I see that the graphic design on the front is actually different. Which would indicate that these are from different series. I don't know which one is from which drive though! Anyhow, everything else seems pretty much the same. Here are some photos(the drive on the right is the "orange" drive. As for the packing, as I said, I don't know):