Your photo is very small. Could you post a larger size again (just under a comment here) and also photos of the windows you'd like suggestions for please.

What does your window look like? These days window treatments are not really all about matching colors from the rest of the room like they were in the 90's.

I am not sure I can tell what the window looks like in this picture, but I can see everything else. But here is my suggestion.
I would do a white panel or roman shade, whatever is the best treatment for you type of window. Then I would add a great banding or trim to it. So maybe in navy or the touch of orange. Whichever you can find and like better. You can even do a VERY inexpensive one frm Ikea and dress it up with the applied banding. Then when you get your grey sofa invest in the PERFECT pillows. Here are some examples....









You have LOTS of bold color going on so the white drapes will help keep that in check and the pillows will tie it all together but on a smaller scale.

@carolins I am going to try to repost a bigger picture, right now though, I only have a picture of the orange wall and it has one of the four windows in it.

@Julie Thome Draperies, Inc ok thank you

@A. Peltier Interiors Thank you for the suggestions!! I like the idea of white. Should they be sheer?

Hi there
I have come back to this again and again. I feel that you have gone quite dramatic and I love the idea of your stripes so found this fabric. I would prefer to keep with the stripes as they are striking. keep at it using solid colours and stripes
It is bold (like orange) and quite dramatic and will tie the colours together.
http://www.fabric.com/home-decor-fabric-striped-fabric-premier-prints-trey-stripe-navy-orange.aspx

Is this for the windows?

Yes. You could use it elsewhere but would prefer you then broke down to orange and white and blue and white pieces. I have a photo in mind and can not find it - will hunt to show you what I am looking for
Here are accents that would break it up
(not at this price though)

OK THANK YOU!!!! :-)

Usually I agree with ASVInteriors, but she has to convince me about the curtain fabric too ;-) Hope she finds the picture.
I think I'd go for neutral curtains with a blue or orange, or blue&orange band (? is that the word?) along the vertical hemline.

I LIKE THAT ALSO!

lol... bkbelle09, you really don't have to shout. I may be getting older but the ears are still working fine ;-)

I cannot find the curtain fabric but here is a less muted moodboard and where I was heading

Ohhh right... I can see it now. Won't it be too dark? Were you thinking floor to ceiling?

Oh no! - I have just incorporated the elements that bkbelle used (the stripes and orange) and leave the ceiling light. (She has used two feature walls which should be enough) so I am suggesting leave the rest white but work on the colour blocking elements and stripes to give this a wow factor : dark blue carpet, navy and white stripes, etc...

The orange and navy blue curtains would tie the two colour blocks together