With a nice clean space like that you can go a lot of different ways. I would start by looking at shower curtains, because they can become the focal point. When you find one or two (or more) that you like, you can play off of the colors in the curtain to find the color towels, bath mat, and even wall color. Some ideas: You could go classic black and white, with a touch of something bright if you want for an accent (like the fuscia in the photo) Or something "spa-like," in acqua and cream. Or you could go bright, with teal and lime green. Another classic look: tan walls, white and/or tan towels and bathmat, simple white accessories. Good luck!

Top down bottom up blinds? They come with an aluminum coating too (to block sunlight and thus heat). In our bedroom we installed 2 roller blinds on top of eachother. Both white. One translucent for privacy and one to darken the room. It was cheaper that the dual layered (cellular) blinds and I did not want foil. Not sure if you'd have the space for that (we insulated the walls from the inside, so our window frames are quite deep).

How about some stunning black wall sconce lights along the wall? Here's a very contemporary example... The soft grey is an excellent option, and will look stunning with green foliage against it. To give it a real 'look' I'd suggest installing some kind of black feature - whether this be painting the window frame & putting shutters either side, or the sconce lights, or a modern metal artwork. Perhaps even tall black plant pots either side of the window.

I have a weird shaped window that I am having difficulty solving. I need to be able to control the light, while still being able to see out. The room gets cold in winter (south facing), and hot in summer (gets sun early morning and late afternoon). I need to control the light so my fabric and paper don't fade, need the lovely even light for working, and have a lovely view from my desk. Venetians or vertical blinds would be perfect except for the angles. Any suggestions?