For comparison
Here's an image of Guadalupe Rock after Opportunity ground it with its RAT:.jpg)
It's processed the same way as the image of Mazatlal--I've been revisiting a lot of my old work to try out the new software. What I wanted to illustrate is that the dust reflects the underlying material, there is some dull blue from "blueberries", and that the PanCam has no problems imaging those colors and distinguishing them. I'm pretty confident that Mazatlal blue isn't an imaging artifact.
