It looks to me like NASA included filter 2, infrared light, in their red color composition. In this image with filter 2, you can see how bright the lower right color tab is:
This one is filter 3, is visible red. The blue tab in the lower right is not nearly as bright:
Here is a composition I did using infrared as red, and shifting the colors toward that end of the spectrum. This is kind of like the sundial in the color landscape.
Here's the image with "normal color" composition:
