from this sunroom's photo comments, it looks like the Houzz nation is divided when it comes to the ceiling: Some feel like the dark color makes the ceiling appear "visually heavy," while others like how the dark hue evokes a feeling of "being sheltered." I fall in the latter camp; I sometimes tend to feel
all-white sunrooms, so I appreciate how the dark shade adds warmth and coziness to the space.
price of sunroom additions will vary based on different factors like what you want to done, size, materials, cost of construction, etc. I'll piggy back off of what Emily said and suggest researching local contractors who's work interests you and talk with them. Perhaps look in the professionals section
wonderful sunroom. i love the furniture setup
ultimate sunroom acts as a second living room. It need not scream wicker. You may bring in upholstered seating, plush pillows and throws, indoor-outdoor rugs and occasional tables that you would think to use inside. A proper sunroom has electrical outlets to support floor and table lamps as well.