Agreed. and since windows make an essential and large part of a space, Curtains/ blinds become an important design element.

Exterior? Exterior, other options include adding trim, painting frames a contrasting color, adding a window box, highlighting the window with plantings, etc. Interior, blinds, shades, panels, or some combination. If you narrow down and include a photo, sit back and prepare to be dazzled by Houzzers coming to your rescue.

I'd suggest dark red curtains if you need curtains at all -- the windows are beautiful as they are, and I'm not sure whether some kind of blind might not give you the ability to darken the room when you want to. On the wall, if you are real fans of any movies or TV shows, three big posters would be fun. Otherwise, I would still suggest using three pieces of art there of that size, all equal in size and somehow relating to each other. Three floral works, or three works in the same style, perhaps. I think a large plain textured rug in a light neutral from one of the cushion fabrics would tie the space together well. You might also consider a lovely low coffee table on the rug to lay out your snacks and drinks for serious media nights.

The Color of the glass depends upon the user : 01) Generally people prefer for clear glass to solve the purpose of opening. 02) Go for tinted shade films to match the facade , plays with transparencies, Solar reflective films etc. That again with the purpose of opening . General variant available are in shade of blue green. 03) Then comes the tinted colored glass , that have varieties and options in color . can go with several permutations and combinations of colors in one frame itself.