IM painted that area and the luggage rack mounting frame the same colour as the outside of the car. It's not something remarkable that you would notice. On my older IM I installed a shallow, rectangular cake pan upside down in that area to cover up the grief and painted everything flat black. I figured my Wife had too many cake pans and did not notice this one went missing.
While you're at it Scott, with the engine lid closed a fun test is to pour about a quart of water into the deck lid area as if you drove through a heavy rain. Then lift the deck lid up as if to check the oil and see where the water goes. You then may want to drill a couple of holes to prevent spilling all that water onto cylinders 1 and 3.