I'm fine moving Kepler, but the Rockies have absolutely nothing on their active roster that I want on the Twins roster save for Nolan Jones, who happens to be another left handed outfielder, so I'm guessing that wouldn't make sense for the Rockies.
Perusing their prospect list, which isn't the area I'm looking at improving, their top 3 pitching prospects are all at A ball or lower and combined have 4 innings of professionally pitched baseball. Their next best prospect pitcher has a 5.41 career MiLB ERA.
I don't expect to get much for Kepler all by himself, but anything they do get, I want to be a positive addition to the team.
Side note, man, doing this five minute exercise made me feel even worse for Rockie fans. There doesn't appear to be any light at the end of the tunnel.