If you look at photo 116 at the link I posted above (hydraulic gear picture in training manual), the cowling definitely looks yellow. Compare it to the yellow between the blue and red on the propeller tips. It matches the cowling while the silver part of the blade does not. At least that is my interpretation. Either way it will look amazing.
I have the actual book in my hand.
I believe the cowl is bare alum. If you look at page 5 of the book with the MLG retracted in a small window on the upper R/H side of the photo/page.
If you look real close the trailing edge vertical strip of the ring cowl is a different shade. This part of the cowl ring is stainless steel and is riveted to the edge of the cowl to stiffen the rear edge.
If it was painted the cowl would have uniform shading. 2 photos on page 21 are close ups of the prop showing low and high pitch. They seem to confirm the bare metal cowl ring.
The prop tips could possibly have a black stripe, bare and then a red tip.
The wing shading on page 2 of the booklet shows a change on the leading edge of the Left Wing about even with the inboard edge of the Aileron. Whether the darker shade goes inboard all the way to the wing attach cover is tough to judge. A photo on page 32 shows what might be a change in the paint shade about a foot inboard of the landing light.
The tail also appears bare. Some skins and fairings are anodized. The rear most fairing where the elevator bellcrank is covered shows much darker in the wide angle photo. If the tail was painted any color that would show uniform shading.
I knew there was remnant of the Navy Bu # visible on the leading edge of the vertical. I took a pic and this showed up-