I like second plan! That space will fit the wardrobe perfectly. Take all colors from the art. The colors can be lighter or darker than the colors you see in art. Take "Venice" with you to paint store and they might be able to help you choose good colors. Idea: paint four walls the same and see if you like that. If you feel the room lacks interest, then paint the accent wall. Choose a pale green that harmonizes with "Venice" and a darker green accent. Yellow + red accent White + blue accent

Starting with the bedroom suites...have your bedding selected. Choose a color that coordinates. You can accent the headboard walls with a darker color and carry that darker color into bathroom on the walls, or continue bedroom color and carry the accent color into your towels and shower curtain. I would paint kitchen and 2 dining room walls the same color, selecting a darker color for the drama in the dining room and contrast with your kitchen cupboards (such as your green color). The other walls in your living room, foyer and hallway, should be your neutral color such as a camel or warm gray. This neutral is bumping up against all of your other room colors. So, it will make a good transition from room to room. On the bold side, you could find a great wallpaper for the two walls in the dining room. Don't forget to play up your foyer with furniture for that first look impact. Selecting your bedding first, allows you to tweak your paint color and hue, and the darkness of your color. Enjoy.

Depending how vivid your scarlet is: You can go with white or cream so it really is the accent wall and nothing is shouting for equal attention You can also go for a muted grey or beige

Here is an article all about color coordination and home design. Take a look at the different color harmony possibilities, and you will be able to find colors that compliment your sofa. http://www.carpetguys.com/blog/color-scheme-and-home-design/ Our recommendation, however, would be to get a white, cream, or brown color. You will want to stick with neutral colors to match your sofa and cushions well. Also, do you know what kind of carpeting you are interested in getting?