Hmmm, what's Honk Kong like these days? Haven't been there in many years.
I'm skeptical about painting the backdrop because the texture is different, and the color won't match prescicely. Also you'd need to use a paint that wont' stick to the other side of the material when it's rolled up.
I'm no paint expert, but something flexible. I'd experiment first on fabric similar to the drop and make sure you're happy with it.
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!