More Words, Deeper Hole

But remember that the images are a composite, and slightly tweaked, mash up of the various colour sensors the 'bot uses - that's not neccesarily an accurate representation of what the substance actually looks like, colour and translucency-wise.

There was actually a huge conspiracy theory blow up over the way the lander-before-last's images showed the little color reference thingie 's blue section as bright pink due to the way the blue paint reflected more infrared than it was meant to, which skewed the resulting image toward the red end of the spectrum on that one bit of the picture, and thus was obviously proof that it was all a hoax by NASA to fool people into not believing in martians.