The Label suggests that the Blue was first issue, possibly a limited first press.
Unless it's a regional thing, where one pressing plant chose the different Logo at time of release.
I've wondered if there's a DEMO out there for the Blue Variation.
If there isn't, I'm guessing that it was a single pressing plant out of sync with the others.
The Dark Blue must be the rarest format.
However;
If there is a DEMO for the Dark Blue - WOW! Incredibly rare.