Hello again Pleinelune! :)
If you're talking about the brown cabinets & draws, unfortunately the answer is no. However, they do match perfectly with the Oak category of Furniture, so at least they're not completely inconsistent with the rest of the game. The fridge cannot be altered either.
Wallpaper & Flooring can still be modified, though. As a bonus, the kitchen comes with two tiles "missing" or "indented", if you will. I know lots of people like to fireplaces in there, Mini-Fridges make sense too, but you can add in whatever you want! Plants, Pots, Chests, Endtables, you name it.
Hope this helps!