I would do blinds with horizontal lines to it. Since I am not sure what you have available there.

Nearly finished Dalma Darling - just posted some photos up of the garden on my profile

I have dark grey windows on my house - on the front we have a bedroom ,bathroom and sitting room that is over looked . I was thinking wood venetian blinds. What colour would you go with the grey window and what size slat? If you think there is something that would look better I'd really appreciate your feedback

I have to agree that glass film is brilliant- we used Purlfrost online. You can either pre measure and they will cut for you you or you can buy a piece and cut to your own specs. It arrives rolled in a tube. We've done two rooms- the living room with full frost and the other, a bedroom- with just the bottom half of the window covered which looks pretty modern and sharp. It was supposed to be a temporary solution till we got shutters organised but it looks so effective and fresh that we've decided to save the small fortune that shutters cost! The help line was great- they recommended leaving a gap around the edge near the frame for a beveled glass effect which did actually work! You can get different levels of opaqueness - we used the less opaque for more light but still private- or patterns or stained glass effect. Its really easy to apply yourself too, and apparently comes off with no damage to the glass at all, so good if. Works out really economical as well. Can you tell I'd recommend it?! :)