I like the idea of stripes, thank you

Your colour scheme for the room sounds lovely. If your large gable wall is to be a feature using that multi-coloured wallpaper, it might be best to go for a plainish solution in your other windows. Is your heart set on blinds or have you also thought about shutters? Joy

Thank you. Yes, the gable wall will be a feature. I think you are right able going plain on the window. I don’t think shutters will go with the overall vibe of the house, it’s a very modern build (photo from the back attached). I’m wondering if a plain but bright pink might work?

Photo of house from back

Yes, bright pink would work, especially if you picked out the 'fuschia pink' (?) from the gable wallpaper. I have a client whose entire house is pink - walls, carpets, furniture, ornaments, etc!

Beautiful house. Consider something a little more muted colour than fuscia. It’s hard to live with at scale. There is a subtle pink in the flowers of the fabric that might work or the green from the leaves.

I would go for a striped pattern on a roller or roman blind. I think a plain blind would be too samey as the 3 walls are going to be one colour.