I would look at roller shades and maybe even the possiblity of battery powered ones. They will give you a clean look and clear view of your window openings. If you want curtains, you can use an iron rod and have it bent to the corners of your bay windows. Use a mount at either end and 1 in the middle (screw it in place so the rod doesn't move). You can then close the curtains to the center of the opening without any major issues.

Sorry this is long. Glad for explanations. Gotta think on this. I would urge you to have complimentary or same or semi-modified treatment on all suitable windows if possible. This would coordinate the look from "room" to "room" and if done well, would add a classy look. You don't have to do it all at once, though. Something modest now and save up for the custom look you crave? Are the existing curtains something that you want to keep? If so, is there a way to coordinate them with additional windows? Is the fabric still available? Can you find a solid colored fabric that is a suitable match in fiber and texture that could be used to link the window areas--a band of solid or print trim on the romans, for example? I wonder what others who have greenhouse garden windows do about window coverings? It is possible to drop a roman between the bump-out window and the room. There may be moisture issues with plants, though, so you might not want the window to be too tightly isolated from the air circulation in the room: mold, rot for woodwork. I am also thinking through the window covering issue for our house and want to be ready if the "4 for 3" sale comes again soon. Have put up tension rods with semi-transparent half-curtains in new kitchen for light and privacy temporarily (see below). DH is in hunting season mode and hasn't finished exterior work, which means that the new honeycombs that just arrived won't go up for a while, and the windows in new kitchen and lobby area will not have sills and mouldings for many months yet, I fear. So I keep designing and redesigning my window treatments in my head. As of now, I plan to layer a strongly patterned roman shade over the single color honeycombs, which will allow me lots of flexibility for all seasons and will give a graphic punch to a window wall that lacks cabinets. Like you, we have purchased a door with miniblinds within the window panel. It's the front door in our new lobby and am glad we did buy it because of light issues. Am not sure how I'm going to coordinate it with the new high, wide window a few feet away, though. A quandry: Should I buy a very narrow white metal blind to match the door's blind? Even if I don't particularly want white? Belligerently, I'm tempted to use a different product altogether, to add color and texture depth and undercut the mod-ness. It's important to know as much as possible about the room before you choose your long-term window treatments. If the backsplash is to be a pattern or a real attention-grabber, you don't want windows to be competition. Same with strong colors, etc. If you're still dithering on the backsplash, try doing what I have done and get a cheap tension rod for the eating area and put up something temporarily. Sewing curtains and valences and roman shades can be very do-able. It's most work on the flat and the seams can be made straight if you use a seam guide on sewing machine. (I have a battered piece of tape that guides me.) Here is a link that might be useful: semi-transparent half-curtains on tension rods for temp privacy and sun control

@apple_pie_order The all white kitchens in my idea books also have wood floors which help to warm things up. Unfortunately, I was unable to talk hubby into wood floors for the kitchen so I had to go with tile which brings even more white into the mix. The furnishings are mine but the upholstered items will be recovered in a different fabric. I am not sure what to do with the furniture at this point since the furniture wood colors are so warm. I have toyed with the idea of another table and credenza but I am not sure I want the expense right now.

My house had the original 1980s drapes. I also never need to cover my picture window for privacy or to block light (I live in Seattle), so I just left them off. I love how open and bright it makes the room feel.