I'm kind of guessing on some of the details here...but the red rams were made for a Snap On special order. I haven't seen a red ram with the Snap On logo so perhaps the deal went south or they just haven't finished yet (although it started ~ 3 years ago)? Or perhaps Kershaw just had some extra red laying around?
Either way, I bet they were just made and sold quickly as is. Again, this is somewhat guessing. And if it matters, my red ram came both tip up and no red ram box. Heck, my new black ram came tip up too. Maybe it's just something Kershaw is starting to do?