Deep Color Is Pass Through?

[bsgraupner]

I called Pioneer yesterday for some troubleshooting on my 92txh receiver. When complete, I asked if a firmware update would be available making 48 bit deep color a feature on it (the specification sheet only lists "deep color support" and "deep color x.v."). He was extremely knowledgeable. He said that 48 bit deep color will simply pass through the receiver.

I double checked with him and he was absolutely sure beyond a doubt.

If that's true- why the distinctions between 12, 36, and 48 bit deep color or the distinction between 1.3 HDMI cable and "High Speed" HDMI Cable.

Can my eyes even distinguish the extra 300 million colors made available by any of them?

How much of this is real? How much of this is marketing? Why is Pioneer almost the only manufacturer that seems to even list it as a feature?