Textured Rocker Panels/Lower body

I had a bit of an incident while wheeling which left a nice sized dent in the area between the rear door and bed of the truck on the cab. While having sliders installed, I had a body shop also repair that dent. They are taking a while on the repair so i had them send me pics of the progress. I noticed that the repair that they made doesnt have the textured finish that Toyota puts on the lower region of the truck from the factory. I dont want one side of my truck to have that and one side not. Is there a way to have them duplicate that texture or explain it to them if they are incompetent?

 

I'm sure that can be added again. Not sure how it's done, but we have many knowledgeable people here on TW that have more knowledge about this than I do.