Back-splash looks appropriate, you already have it, it's an easy install, and the wife likes it...
When I showed the three color samples of light blue, turquoise, and coral Boomerang Formica to the Boss, I said I like light blue. She asked what other colors there were... “Just grey” I said. I got a lot of mileage out of that concession... Natural maple floors, blue micro-blinds, and a Pirelli rubber bath floor.
I'd concede to the back-splash. You may need the negotiating leverage elsewhere.
BTW, She was right, now I understand the grey... win win
After 50 years of “No Trace” camping out of a 20lb pack, cooking only on a Svea 123, two electronic ignition gas burners in an Airstream is quite a luxury.
With little room to work in a Globe Trotter, the extra counter space, microwave, campfire cooking iron, and outside plug-in gas grill works best for the two of us. The Cozy Cabin boat heater also has a cook-top. If we ever need an oven, we'll explore the world of dutch oven cooking.
The 2-burner cooktop is made in Colorado, found it on eBay.
Link to cozy Cabin heater in this thread...
The refrigerator is across the aisle from stove-top.
Yes, it is my work. All cabinets are the re-sawn ash gauchos, closet bulkheads, and doors. I cleaned and re-purposed every salvageable board foot of original interior.