I would also definitely go white if the windows are on the green wall. Will be much more natural to tie the accent wall with the stark wht contrasting walls. Always a very chic contemporary look. Also very relaxing as opposed to the treatments standing out when you already have your standout feature- the green accent wall. Great white bed you ordered! Then I love all the blue/green/ silver accent advice. I did a similar room in purples/greys/ whites and we used great posted prints of florals with a little oriental flair in nice big mats w frames. You could do florals or nice big botanicals in greens would be very fresh and modern!! White or silver frames or maybe even the shock of black would be cool.

How about a traditional sheepskin rug for the floor, this will look great on the wood and is lovely for bare feet when you get out of bed in the morning! As for the curtains and bedding, with grey walls and white furniture, you have the liberty to do as you like. Personally, I would add some pattern with colour in the curtains (nothing too garish!) attached is a pattern by Romo. I would keep the bed linen a plain colour, below is Secret Linen Store, relaxed denim bedding in Graphite Grey then you can add some pattern and colour with cushions and throws. If you like slightly bolder colour patterns, Bluebellgray also do some lovely fabrics in bold but beautiful prints. I hope the suggestions help!

Silvermist from Sherwin Williams would look beautiful with your walnut colored furniture. It was a light teal undertone. Here's a bedroom photo with this color. While the furniture color is lighter, yours will provide a stronger contrast.

Thank you guys. I went to the carpet showroom today and the guy there was not very helpful. Just threw a few books at me. So I am none the wiser really. But there would not be as much selection here in Ireland as what you would have in the states. I won't give up though, I saw a few ones with speckles on it and they were nice but I think I will hold out for the pattern ones if I see them. Maybe what I want is not out there..... Wont see any dirt, only have to Hoover once a week, no foot marks and light in color ??