Lots of options
Decorating your kitchen may involve some form of kitchen window treatment. As with bathrooms, you may only need a simple roller or slatted shade, or Roman shade.
The wood slats of the Venetian shade match the wood finish of the kitchen units.
Leave it as it is?
On the other hand, you may not need anything at all. If you have a beautiful view from your kitchen window, and no one overlooks you, then consider leaving the window as it is. Of course, you may wish to have something to shut out the night or give you a certain amount of privacy - it's a personal choice.
A cafe curtain in the window provides privacy for this kitchen.
Not too plain...
If you find that roller shades or roman shades are just a little too plain, think about finishing off the bottom edge with a contrasting border. Roller shades can also have a shaped finish, such as a scalloped edge.
A simple roller shade is all that's neeeded at this window.
A little softness
Unless your kitchen is a country style or rustic, keep your kitchen curtains as simple as you can.
If you want something of a more decorative nature and you don't have the room either in or around the window, you could have a pair of false (or dress) drapes which don't actually pull together, but are tied back permanently. Then fit a roller shade behind the drapes which you can pull down when you need some privacy. This way you get function with a little softness.
