This image is taken in a public restroom (inspiration can be found anywhere, right?)
Nothing in the image is actually red. What you see is a mirror at the left in the image and a (chrome) paper towel dispenser. There was a red door at the left side of the camera (not visible in the image), which is reflecting in the mirror and dispenser. The white line is a reflection of the doorpost. You can also see a reflection of the wall (beige tiles) in the restroom.