Living room ... ideas please?

I live in a 2 story Townhouse and the problem is with my Living room.

I purchased 3 large pieces of furniture separately and now find that they are too dark.

One is a 3 piece is a cherry wood entertainment center that is 81 inches tall, the other piece is a brown tuxedo style letter sofa and the last piece is a painted black large Bombay chest.

I don’t want to sell any of the pieces but I find them to be overwhelming, lack warmth and am too dark.

What can I do to warm up the place and lighten things up?

The walls are celery color.

Thank you, Karen Carlisle