For a kitchen, my favorite is a roman shade. It gives you the beauty of fabric with the function of a shade.

Have you thought of combining treatments? We do a lot of Hunter Douglas shades for privacy and light control coupled with stationary panels to give softness and luxury to the treatment. Combining textures such as woven woods provides interest both inside and out. Stationary panels allow you to have the soft treatments you want without worrying about the needed room for stack-back when the drapery is open.

No window treatments are going to give "total darkness" Anyone who sells you something and says it will is a liar. Even the best blackout shades installed with side channels will block (maybe) 90% of the light coming in a window. Call a local professional to come out to your home with samples to look at. Best options will probably be a double-cell honeycomb shade or a roller shade.

How about painting out all your wood and windows a charcoal grey, not gloss. Then maybe a light blueish grey paint for over the render. I think it will look v smart