That's a really cool looking board, makes me excited to work with some DSA.
I was about to build my own from a GT60 PCB and reds but the K65 is, aside from the keycaps, the perfect board for me.
It is exactly how i would have wanted to build my own instead of the typical GT60 build and I love it.
I think i will be happy even leaving the bottom row as is. What really bugged me was the grey WASD and arrow keys, with those gone, it looks much cleaner. This mock up I made when deciding on what caps to get looks a bit silly because it's a 2 minute Photoshop hackjob, but it was good enough to let me visualize how it looked. The more i look at it, the less it seems like I really need to have the bottom row white too. It mixes better with the black media keys on top - which i do use! Just me though, but its okay, its my clacks