Have you seen this kitchen linked below? It's gorgeous. Laminate counters are more black though, but it may be a start.

Here is a link that might be useful: Janie-K's kitchen

I really like Janie K's Wilsonart Oiled Soapstone, and I'm considering doing Wilsonart Pearl Soapstone (gray) in my kitchen.

Formica Basalt Slate is an another option which has been used on GW.

Out of the dark samples I brought home, the only blackish/greenish ones are more granite-y: Wilsonart Bella Venito and Ebony Eclipse. Wilsonart Rustic Slate has some interesting color variations, though not necessarily greenish.

An interesting new color is Wilsonart Black Alicante, and Formica Mineral Olivine and Soapstone Sequoia might be worth a look in person.

Did you see senator13's recent post on black laminate?
My 'slabs' are here!

That thread led me to look at Arborite's website, and they have many interesting patterns, including Inukshuk Carbon, Raw Steel, Jaipur Onyx, and Sahara Nights.