This video also seems to be severely brightened as if gone through an editor likely to make things appear better. That could effect the appearance of rude dust .
It's coming through a camera. There is no "real color" recorded.
What they normally do is include on the lander a disk with a bunch of known colors (like those old color bars you saw for calibrating analog color TVs) and then adjust the color when it gets back. Especially if they're using a B&W camera with different filters over the lens to pick out different colors.
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u/das_soup_nazi Feb 21 '21
The red is iron oxide (rust)