The overly-blue Scout was simply not set up properly in time for this Experimental patch. It will be fixed in time for Update 29.
The Driller armor is a different story however (though the stripes are coming back, no worries).
As part of the new Paintjob system for armors, you will now start with only a single default Paintjob, which will be applied to any armor you have. There will however be a lot of alternative Paintjobs to find and unlock, new ones as well as the old ones (such as the one shown on left Driller). Any Paintjobs you find can be used on ANY of your armors for that class.
There will be dusty Paintjobs, there will be clean Paintjobs, and there will be Paintjobs that shake things up in other ways. And there will be more of them coming down the line.