What color should I paint my room :)?

Heeyyyy guys :) I'm moving soon into a new house and I want to know what color(s) to paint my room. I kindof want a modern, urban room. Like..Dark colors (not black. I'm not allowed.) But maybe a dark blue or something. And you know those swirly designs that look kindof floral? I somehow want that incorporated too. And can you give me some advice on how to design with furniture? I want something that could look like it belongs in urban outfitters/anthropologie. Thank yuuuuz :)