Oh, that's a tough one: I dunno, really. I find myself gravitating towards the white-on-red but might that be garish with a pastel-green-and-grey keyboard? Sometimes my approach to aesthetics is try it and see; and sometimes it works... and often it doesn't!
I'm liking the keyboard more and more except for the tendency of my fingers to keep getting lost. Okay, more
lost: that's why the potential absence of one of the delete keys would've been so disastrous! But the looks, solidity and feel have won me over in spite of my initial "argh" about things going wrong. I just hope I never need to dismantle it.