Transforming a Built-In Bookcase with Paint

We are working with a client on changing the look of her living room.  The new furniture is on order and we are restyling the built-in bookcases that flank her fireplace.  They used to be painted a very specific red, but we are slowly removing the majority of red in the room, instead focusing on highlighting the blue in her vintage rug.

Here's a before/after!