Curtain Colour Advice?

I need advice on curtain colors. I've got beige walls in my living room, dark brown velvet sofa, dark walnut for bookshelf and TV unit. The floor has beige tiles. I've got double curtain rods installed. I am planning on having lace curtains on the higher rod with a silk or cotton curtain on the lower one. But deciding the color is a task.

The bedroom walls are lemon in color, with the bed and clothes cupboard are dark brown in color. Please advise.

By nora