I love rollerblinds for their neat, sophisticated look. Venetians are a nightmare to clean... x) Plantation shutters are worth the investment. Low maintenance and good in wet areas where fabrics/wood may not be so good. I have a mix of plantation shutters and rollerblinds, with a few curtains. :)

Claudia, do you plan to hang the Roman blinds well above the window frame and divided into two sections for ease of sliding open the door?

I love your view! There's options here, and they'll be led by where your blinds are installed in my opinion. It looks like you might need to install the blinds to the face of the architraves, in which case, I'd be selecting pale blinds to sit outside the window as they'll, hopefully be up out of the way most of the time. If they fit inside the recess, then I'd select dark.

Of course you would pottsy. I would probably consider each room separately. If curtains in front I’d probably go wall/trim colour. But in other rooms depends on mood. My kids rooms are all different but soft colours. One boy has a soft blue another green and my daughter just opted for light grey with her black and white theme. The soft colours don’t dominate and most people don’t even notice the colour. Now if they were decorative Roman blinds say then you want them noticed. Pale grey would work with your windows and carpet without being too dominating. But what do you want from blindsL