I completely agree with the overarching principles behind your design. (1) Since most Hong Kong flats are so small, it's smart to use white as the dominant color - for walls, furniture, drapes, and bedding. Just use one or two accent colors to break up the monotomy. (2) Since a lot of Hongkongers have a lot of clutter at home, hiding the clutter (using small curtains) and organizing it (using various containers) is indeed a very good idea. I think your design approach is very smart and practical. Bravo!
