You'll never get this from DIB.
That picture is awsome! I have a 2000 F-150 that is dark blue, and does the same thing in the sunlight. Truth of the matter is I didn't know that at the time I bought it, and hated it once I noticed it. I'm a dude, and didn't want a purple truck....lol.
Since I never wash my truck, the clear coat is in poor condition, and doesn't let as much light through to the paint below. My truck rarely ever looks purple now.
As a side note, I tested some Turtle Wax Ice on my tailgate. First time I've ever applied a wax to any part of the truck. The first thing I noticed was the purple tones came back.