Yes. Parts-People has two backlit keyboards for your model, one black and one grey.  Note that it's a lot of work to remove and install a keyboard in a 7590. You must disassemble most of the system. Follow the disassembly and reassembly steps in Dell's Service Manual.Look on YouTube for videos showing disassembly of your model. But, be cautious with them, as some use steps or methods that are not appropriate. Use the videos to add to your understanding of what to do, but follow the steps in Dell's manual. Whenever touching components or working inside a computer, wear a grounded wrist strap, also called anti-static wrist strap, ESD wrist strap, or ground bracelet. It's a cheap and sensible precaution. Rest the laptop on an anti-static mat or at least a reasonable alternative such as corrugated cardboard.
Hi. Is it possible to replace an italian style keyboard on a Dell Inspiron 7590 with a US style keyboard for the same model?
Keyboard replacement inspiron 7590 with a different language