One of my favorite parts of decorating a space is finding a focal point to build the rest off of. In the apartment I just moved into, I chose to create a gallery wall and have the accent colors organically come from that. Above is the finished product.
As you can see, I pulled out the black and white and the deep teal color from the photographs and used that in the rest of the space. I love the cool color palette and the pop of metallic the the gold mirror adds.
See below for more gallery wall inspiration I collected from the internet while creating mine: