I'd be tempted to mix it up with a grey door too - just to give it some balance - all oak might be a bit overbearing ?! I've not had experience of this one - but should imagine it's easy enough to wipe clean . I'd ask in store if it will change in colour ? depends on the way its finished I guess - that, and if it's in strong sunlight too ?!?!
I do want to make it look less "country" and was planning on doing that with dark colour on the walls, and some industrial-style lights and handles. Maybe a stainless steel worktop on the island, so I'll consider the grey with that in mind.