Colonials first SAK style knives had carbon steel blades and an older style can opener. They were called Swiss Master Master Series utility knives.
Here are the first two and they both have different can openers and cork screws.They also have brass liners and all the models after these have aluminum liners.
Then we have the next kind that has the new logo stamped on it but still has carbon steel blades with exposed rivets and an old style can opener.
I have the bail for this one but I took it off because I use it a lot and don't like the bail in my pocket.
Now this is where I think the Blue Colonial Swiss master fits in. The first sign of the new can opener and belt punch, probably stainless steel blade but still has visible assembly rivets.
Then Colonial re designs them. They now have hidden assembly rivets, stainless steel blades, Victorinox style can openers, the awl becomes a belt punch and they add what they call a tote ring which is just a Victorinox style key ring. Some of them even have the Phillips screwdriver...once again just like Victorinox.
These are called the Swiss Master Ranger Series. The model numbers are all in the 2000's where the old models were in the 1000's.
And those are what we see here in Colonials last Catalog from 1995.
Here is a picture of a 6 function Swiss Master Ranger Series Model # 2006.