looks like there is some space between the molding and the ceiling where you could put some cove lighting, that would highlight the ceiling. Also if you wanted to play down the formal feel you could always wrap the columns to square or remove them. I would leave the fireplace as is. lastly, you can change the trim on that eyeball to a gold or bronze rather than white to blend away a bit more, and convert it to an MR 16 to enable smaller housing and more actuate light for the art above the fireplace.
Q