I don't have photoshop so here is my (lame) attempt using Paint. I couldn't get the colors quite right (esp. olive) but maybe it will give you an idea...

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Wow, I'm really loving the olive green! It breaks up your current space nicely and sets off your current cabs really well. It might be a little too bright after you install that chimney style hood, though. I might tint it a bit gray or taupe.

Nice job, chicagoans! I don't even have to use my 'squint test' to imagine those colors on her island.

I like the olive, too, but wonder if you could tone it down towards black a little.

You've already done a nice job on that kitchen!

Hogar
Could you let me know what your countertops are ?
I prefer the dark island -
Your kitchen is nice -

This color is Valspar La Fonda Olive. They have a 'color visualizer' on their site where you can select colors and place them on items in a room.

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From Benjamin Moore (they have a color visualizer; you can upload your own pictures. Haven't tried to upload any but it might be worth it for you to try):
Guacamole
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Shady Lane
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I"m not an olive green girl but I'm liking those last two colors in your setting!

Hogar,
So many beautiful options. I can't vote. I have changed
my mind three times. First I thought the black and then
the green looks so pretty and I go back to black.

I can see you an are in a quandry.
Looking forward to seeing what others chime in to say.
~boxerpups

In theory I like all of your options. After seeing the samples though, I like the black. I think the green is a little much with your walls.

Just to throw another option and more confusion out there...what about a rusty red kind of like your Paris Bistro sign?

Love your backsplash...very pretty. :)

I like the Guacamole.

Thanks Chicagoans for taking your time in painting the island for me and everyone else for your opinions!!
I really like the idea of an neutral olivy green. I forgot to mention that I'm changing the wall color. It is "too green" for me. I'm leaning towards SW Favorite tan or Universal Khaki. I always use BM but can't find the right color. Love BM Providence olive but it's a little too dark. Another one that I like is BM Sag Harbor Grey but I think the SW Universal Khaki is a little warmer. I might take the SW color to BM store for a color match. Once I decide on the wall color then I might go a color darker on the paint card for the island. What do you think? Have anyone used these colors? Do you know of any other neutral green color? Here is a close up of the green crushed glass tile color I'm trying to use as a reference guide for the walls and island (sorry the picture is blurry).

Jamal123, my countertops are "Ivory Fantasy" granite. It is a creme granite with caramel, taupe/greyish and black dots and swirls. I'm happy with them!! Here is a close up (the picture don't do it justice, looks a little too light here, it's actually a little warmer with nice sparkling mica)

Cali wendy, I thought about the red too but not sure if it will go with the rust color in the accent tiles. The paris bistro sign is not staying. I just needed it for the clock. I'm looking for another clock to hang there.

I'm a sucker for black islands. Installed one in my old house and will have one in the new house!!

Your tile is beautiful, and I really like the green island. Why don't you color match the green of the tiles for your island?