That's an interesting new twist! I had not considered at all the possibility that the images we see may have been highlighted specifically to suit a previous customer's request. That would certainly go some way to explaining a lot of the false color we see - and it makes sense since a lot of these images would come via mineral exploration companies. Many of the strips I have seen in Mongolia, for example, 'just happen' to have a mine or search grids right in the middle of them.
However here's an interesting variation on the theme : explain the pretty road shown in the attached placemark!

(same satellite image)