Find a lighter color on the paint strip and continue painting with it all the way up and ceiling.

If the media stand can be painted do it is wall color but a gloss finish.

Add window treatments; throw pillows; ottoman with a large tray;

Pottery Barn…used these in a client’s den. If I remember correctly the blue/green of the walls is in the print, but it leans more to your sectional.

Walmart

Forget about throw pillows…they always will wind up on the floor.