Either go with a darker shade for your woodwork or a lighter shade for the woodwork than the wall colors. I would use either the same color for all rooms or at least within the same color family. Each room will look different if you paint them all the same anyway due to light, time, of day and your furnishings. I like to choose the very lightest shade on a particular color spectrum. In other word a white with a hint of color. The ceilings do with a soft white or an off white. If you plan to place the TV above the fireplace a darker color will look good as an accent on that wall. If you have a narrow room try a darker color on the smallest wall to balance the size of the room. If your rooms are large try a very dark brown or navy or maroon as an accent wall. Have fun painting. Remember, if you don't like it, it's just paint and paint is cheap.

I am an amateur lover of home decorating. I too have a very awkward long narrow living room that is 350cm by 620cm. Additionally it has diagonal traffic flow from the front entry to the rest of the flat. The owners have built a cabinet at one end for the TV, etc. I think I would make a cosy seating area at one end of your long living room. Place a grey or brown sofa at one end but not against the wall. I like the idea of a narrow console table behind the sofa with a table lamp, a plant or a large statue. This brings the end wall closer in. A peachy or raspberry carpet in front of the sofa will pick up the wall colour and anchor this seating area. (grey and some browns also coordinate with raspberry/peach). A couple of raspberry sofa cushions can help include the wall colour into your overall scheme. Single chairs opposite the sofa allows visual and actual flow down the narrow room and completes this seating area. At the other end of the long narrow living room I would place a reading chair, a floor lamp and a small round coffee table. If there is room you could have a tall bookshelf with you favourite books. What do you have on the long side walls? I have windows and doorways on both long sides. I decided to use pull up shades on the windows instead of curtains which I thought would make my narrow living room look more narrow. The wall colour is white but I think I will tone it down to a soft grey. I plan to paint the end walls a darker grey.

most colours would go with the light to neutral oak floor. A dark contrast wood panelled door would look great. someone here said that should be avoided. I feel a dark contrast,whether in wood, or a coloured paint would work very well. A painted panelled door (red, blue, green etc) with a wooden floor wood be a bold choice and will give the space a more European look.

Hi @Aditya Somani. Before going with any color, you must take time and understand the tone you are looking for. Even if you consider on going grey, which is awesome; try to acknowledge the tone by warm palette or cool palette. The warm tone is recommended as it works more on the psychological level. Hope this helps.