Ideally, I would paint the entire right section of the wall aqua blue and apply white vinyl letter for the logo – instead of the current sign, which perhaps could be moved into the new space?
I would get rid of the speakers and maybe even cover up the outlets (or get nicer outlet covers).
The walls behind the couch could be a lighter gray, but I would make the other walls (with the closets) a slightly darker gray color so they don’t compete with the rest of the space.
We should also replace the couch and add some plants. I can make some artwork recommendations for the walls once they’re painted.