Disable Part Heat highlight?

[MashAndBangers]

I can't seem to find the setting that disables parts turning red as they heat up.  It's not gauges, it's not the actual heat highlight.  I played with F10, F11, and F12 to try and turn it off, but to no avail.  What is this and how can we turn it off?

In this screenshot, you can see the cockpit section is more pink than the rest of the fuselage.

 

Here's another screenshot showing multiple parts going into the pink:

 

Note:  While my KSP is modded, this is an effect seen in unmodded KSP as well.  But I'm following the rules and posting under modded installs.

[4x4cheesecake]

IIRC you can disable it in the graphics settings, it's called "Highlight FX"

[MashAndBangers]

9 minutes ago, 4x4cheesecake said:

IIRC you can disable it in the graphics settings, it's called "Highlight FX"

That wasn't it.

[Dakitess]

Dang, I'm facing the same issue, can't disable it, that's sp frustrating, 2 weeks that i'm looking the web, Reddit, discords about it...