turns a light pink.. just buy new curtains.. If you REALLY want to do this buy whats called honeycomb shades. and look for the dual blackouts and minimal filter. I have them in my kids rooms and when I need to I pull one and the room is dark slide the next set down and the room has filtered white light they cost about 100-150 or so per window a large 8' window is near 300 bucks but they also double the energy efficiency of nearly all windows

I have red curtains and I like my privacy. But I also like natural lighting. So when I close my curtains it gets super dark. I want to bleach them, what color would the turn. Also how would I do it.