Original engine colors??????

I know this subject has debated on other sites many times. I have posted a few pictures of the 340 in my 69 GTS before, but lets do it again for this post.
This is a original paint motor on a 10.5K mile car.
Some see blue, but I see turquoise. At least I think I do?

View attachment 1715237810
That's blue. Here is turquoise.69 340.JPG