Taste the Rainbow

I was going through the randomness that is my collection and I came across an 800 count box full of non-Rangers.  It has my address on it and I think it was sent over as a part of someone clearing stuff out of their collection.  I don't know why, but I have it and I was thinking of doing some sort of giveaway with it. First, I wanted to sort through it and see what kind of goodies it held.

I ran across a rainbow of printing errors, courtesy of Topps.

These 1989 Rookies cards came with a little bonus streak of colored foil.  Steve Wilson has a green strip across his chest.  

Gregg Olson has a blue strip across his name.  

This is what the Gregg Olson is supposed to look like.  See, no foil strip anywhere.  I don't know how those could have gotten on the cards accidentally. 



Last, but not least is Mr. Bob Milacki.  He has a pinkish/purple/red strip across his name.  I know printing errors are fairly common, but these cards aren't supposed to have any foil on them so I don't understand how this one happened. 

Any ideas?