It's looking good.
Probably only you can tell at the moment on the dark/light thing, I can't really judge from photos.
I'm wondering whether one of the things unsettling you might be the patterns though? The grain on both pieces is pretty, but maybe they don't complement each other too well? However, I think you're right about tuners, and especially strings - that'll break it up a bit. I've got a feeling you're going to be alright. :D