I really like this one--thinking of ways to keep the light in the room while covering the floorspace of the back half of the room? Thoughts, @Sophie Paquette ?

Homemade curtains made from a shower curtain and black fabric. (or use window curtain to make shower curtain!

Heavy voiles: Elise Curtain Voiles are perfect for on bi-fold doors and large glazed areas, as this voile allows light into the room while diffusing extreme sunlight.

Our range of curtain voiles are ideal for windows, blinds & bi-fold doors. We sell curtain voiles by the metre. Pret a Vivre

Perhaps our grey walls will pair best with simple white curtains... wouldn't block light!

grey walls and white curtains -- for our bedroom. Never thought of white curtains but these are out exact colors.