N63 Crankshaft Condition - Blue hue on all crank pins and mains - All, not just one

[JohnelP]

I am in the process of tearing down the engine (for multiple reasons).
Doing the crankshaft check, and, I am a little concerned. The crankshaft metal has blue hue on the areas of the crank pins and crank main. From my amateur knowledge, blue hue means super high heat in that area.
Took a video of the crank condition

Now, it puzzles me is that only the crank "turned blue".... The connecting rods caps and the mains look normal in color. It is just the crank.
Thinking, i it would be overheat, the rods and caps should turn blue too. But they look normal. Same for the main supports. Well, please review the video. It should tell everything.

Also, some pictures:

[Sophisticated Redneck]

Assuming the engine didn't seize, its most likely from heat treating the bearing journals on the crank.