These are the colour scheme you can go with ,Highlight the staircase with dark colour with muted mild colour background.Muted colours will bring down the boldness of the projections and merge down its presence.

Love the armless sofa-bench! Try using it in the center as a "cross-linking" piece between the sofa and chairs. That way people can sit on both sides of it, conversing with the sofa people and the chair people. Put the chairs where it is and use the side table from the left of the pic, or the one with flowers, between them. You'll need one huge rug to anchor the space or two smaller, and very similar ones, to put on either side of the blue sofa-bench. The other two side tables are too tall and too short for your seating pieces, so ditch them. Use your coffee table between the sofa and armless sofa (18" away from each of them.) Here's a chart for judging table and lamp heights as you'll need to work on that for balance. Please try this arrangement, and post by commenting and using the Attach Images button to add pix of the update. We'll tweak it on out from there.

You can also think on panel work with some openable shutters which can hide the boards as well give an access to use when needed . Bottom can be a sleek storage with louvers where inverter can get tucked in and also a seat or a ledge used for multipurpose. One thing to remember this set out would not be budgeted but, can allow you to explore option to make it look good or articulate well.

Teal is a very trendy colour, but having it on all four walls may be an overkill in the kitchen, especially with that dramatic chevron dado tile. I hope at least the 4th wall is white! The cabinets have to be white too