As previously mentioned, it's as likely that Skull was timed to match the original color timing of Raiders.

A still from the set says nothing about the colouring of the film print. I was initially open to the idea that the gold colouring might have been incorrect but thus far I haven't seen anything as convincing as those 35mm stills that strongly reflect the timing of the BD.

I'll always determine my preference on the basis of the best evidence available, and right now the evidence points to the fact that the BD (while perhaps not perfect in every scene) is the closest Raiders has been to it's original theatrical timing.