I've been working on a Colorado map. I think it can produce a 6-1-1 delegation. I didn't take into account incumbent Democrats, but I don't think they'd have a huge problem with this map.
This district goes from Colorado Springs, Pueblo, and stretches west to pick rural Democratic areas. It goes all the way to the border. The district then stretches north to Aspen and goes as far north as Garfield and Eagle County. I'd imagine a Democratic candidate would come from Colorado Springs or Pueblo. It would seem like a prime pick up opportunity. Representative Scott Tipton (R) lives in the district, but just barely. He could easily run in the 7th.
This district would essentially be a successor to Rep. Jared Polis's (D) district. It drops by 2.5% though. I don't think it would be a huge problem. Polis is wealthy and well connected. He could easily outspend a challenger. And seeing how he's in the NDC, I don't foresee an issue.
This District takes in Ft. Collins, Greeley, and parts of Adams County. I'd imagine this would be the toughest district to win, but I think we can do it with the right candidate. Former Rep. Betsy Markey (D) would probably run here. The man that beat her in 2010, Rep. Cory Gardner (R), lives deep in the 7th and would almost definitely run there.
This district is the successor to Rep. Ed Perlmutter (D) old district. He would definitely run here. It dropped by .9%. That doesn't seem like such a problem. He under performed, but even with the drop he would have still won.
The most Democratic of all the districts. This would be Rep. Diana DeGette's district. It drops by almost 20%. Though it would still be safe for her.
This is the battleground district of Colorado, but under my map it becomes an easy pickup. I doubt Andrew Romanoff would have been given a free ride in the primary in this case. Representative Mike Coffman (R) would easily lose.
Being the only safe seat for Republicans, this district might see a pileup. Reps. Gardner, Lamborn, and Tipton would all probably enter a primary to take this seat.