For a modern living room with a blue and green color palette, 8 seating spaces and 3 statement pieces should be included to accommodate 4 people. The room should evoke a warm and inviting atmosphere with plenty of natural elements.  For the seating, a mix of seating pieces should be used to create a cozy atmosphere. A mid-century modern sofa in a light blue would be a great choice for the main seating area, with two armchairs in a dark green to create a contrast. A large round coffee table should be placed in front of the seating, with a light blue and green patterned rug underneath it.  For the statement pieces, a large artistically designed wall mirror should be placed on one wall, and a modern abstract wall art should be hung up on the opposite wall. A large blue and green patterned area rug can be placed in the center of the room to tie the room together. For the plants and greenery, a mix of large and small plants should be placed in different areas of the room. A few small potted succulents can be added to the coffee table, and a large potted palm tree should be placed in the corner of the room. A few hanging planters with trailing vines can be hung up on the walls for an added touch of greenery.  Lighting is also important for a modern living room, and a few strategically placed pendant lights and table lamps should be used. The pendant lights should be in a modern gold design, and the table lamps should be in a blue and green pattern to tie in with the color palette.  Finally, some cushions and throws should be used to add texture and warmth to the room. A mix of light blue and green cushions should be placed on the seating area, and a few chunky knit throws should be added to the armchairs.