This aircraft had a standard USN mid war four-tone colour scheme, albeit very faded and dirty. RNZAF Corsairs were generally left in their original US factory scheme. However some may have been repainted later in RNZAF colours, particularly those used at training schools.
The RNZAF markings were painted over the top of the US ones in a blue that was a bit lighter than USAAF insignia blue and that faded to a much lighter blue with age. You can see the difference in tone between USAAF insignia blue and RNZAF insignia blue in the photos in this
forum thread. The centres of the markings have been repainted in RNZAF blue while the bars were left in the darker US blue. This thread also gives the FS colours used for new and faded RNZAF insignia blue and shows photos of markings with various degrees of fade.
Since posting the screenshots I've desaturated the blue on the markings on this skin by 30% but I'm not making them lighter because that does not match the photo I have of it.