I happen to be repainting my Kubota now. As Rodworthy said you should try buffing it out with a compound and see if you can restore the shine. I found that while wet sanding my hood and loader I was able to bring a lot of the color back. Since I was planning to paint I continued sanding past that point.
If you really want to shine it up try auto detailing clay with soap, some compound, polish and a then wax. Can do everything with an orbital sander with the exception of the clay.
Let us know how it goes.
If you have already reached the Kubota Mary Kay Pink color hue, a repaint will likely be your only option.
Here is a before and after photo of my loader when I purchased it. You can see what the paint looked like after compound, polish and wax. Made a huge difference and your tractor is a year newer. Of course, it isn't forever and you may need to do this a couple times a year but at least it may put off a paint job.
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I will certainly give that a try on my L48 Kubota, but compounding the backhoe actually seems like it would be more difficult than repainting.
Repainting is a lot like compounding just with a much coarser sandpaper. I can't imagine it being nearly the work that degreasing, sanding, priming and painting will be. Worth a try.
Wor