Decorating Help

[lovely1m]

I've lived in apartments most of my life so I haven't had real control over any decorating, but we are moving into a house next month and I need some decorating help. I need to decide on paint colors before I move in because I am having a painter come in, but I have no idea what to do with the great room. Its the living room, dining room, kitchen and foyer. There will be tigerwood laminate floors, the cupboards and trim are cherry, the counter tops are a dark green (not my favorite, but they are staying) and I bought a grey, modern style couch. I plan to buy an area rug and a chair yet, but haven't found the right ones. What color would you paint and which walls? Any other design help is appreciated. My style tends to be modern. Thanks!
Here's a couple of pictures I took from the listing of it (the foyer one is from a different, but same floor plan house).





This is the flooring I bought: