You don't necessarily have to have factory installed materials and go through the agony of attempting to find an exact match for what you had. You have a perfect opportunity to replace a drab looking, plain white back splash with something much more attractive now.
Any type of wall paneling will work, especially if it has a plastic base or a rubber base material (not paper or wood paneling). You can also use those 2x2 foot sheets of simulated aluminum or copper often used on ceilings. Actually, my kitchen walls in my house, above all my counter tops and below the cabinets, including the sink and stove have this.
You also have the option of using any wall paneling used in bathrooms. Usually, these are more of a rubber texture, or a very flexible vinyl. I installed these in one of my bathrooms at the house, around the shower/tub and on around the toilet, floor to ceiling. Very strong, very water resistant, and installs with Liquid Nails.
Here's the simulated tin for ceilings I was talking about. I love this stuff, and it looks good too:
Click here.
For example, there are over a thousand options available at Lowe's Home Improvement stores that are candidates. Many of these are quite decorative:
Click here.
Then there is frp wall paneling (nice stuff)
Click here for frp
And you can go to the moon with bathroom paneling:
Bathroom Paneling, click here.
You can go as expensive as you want or a cost effective as you want. While you are at it, why not add the same behind the stove too.