If you're referring to the sides they would be the same color as the bulkheads underneath them and would carry the lines of the camouflage pattern.
If you're talking the fore and aft overhang.... I dunno. Best I can offer is this shot of CV-12 Hornet after her forward flight deck collapsed; It was a June 1945 report so she had gone from the original blue paint she launched in to MS 33 3A and sat in that for a bit.

If you look at the far overhead it's significantly lighter than those nearer the camera. Now, It is extremely possible that this is because they're closer to the light and reflective surface (Water) that could brigthen them. But if you look at the top of the overhead there is just no way in Ned that what we're seeing is 5L. My guess is that we're seeing 5N. The demarkation is just too sharp for that to be the natural fading of light.
