Ken, welcome aboard. I have a DG with Graphite on order as well. I've never seen the DG with willow and would guess it would look good. Personally, I would prefer the DG with black interior, but if you like a lighter interior, willow does look nice.
Have you seen one yet? Check out the sedans, as most Infiniti dealers have the sedans in and you might be able to find a similar color combo to get an idea off of, like silver and willow.
Let us know when she comes in, and send pictures! I'm putting together a gallery as I write this! [
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2003 G35 Coupe (on order)
6-speed
Diamond Graphite / Graphite