Toward the end of the facility are located a number of rooms that the graffiti artists continually repaint. Some of the art was quite recent. It was a riot of color.
I stitched three HDR images together in Photoshop CS5 (a total of 15 exposures) to make this one. I used a hint of NIK's Glamor Glow. The colors are very vivid, some are neon paint so no reason to touch the saturation slider.