I've heard this repellant solution for years. Folks swear by the dryer strips by saying, well I use them and don't have a problem, speaking of campers. I say, campers or engine compartments, if you use them and don't have a rodent problem, it's because there are no rodents around. I've heard...
I think Covering the blue "ski jump" portion with a black wrap or paint would look good if you leave the high beam uncovered. It would look like an extension of the grill. Try it and post a picture.
My "Old Guy" exterior, retirement truck. retired Feb 28th, 2025 after 38 years with the FAA. Prior to that, a stint with Ford Aerospace at the Nevada Test site, and before that 21 years active duty Air Force. Retired 1 May, 1985.