The Dems came extremely close to controlling the redistricting trifecta in CO, losing the state house of reps by a single seat. If the Dems had won that house seat last year, or if they could somehow convince one of the Republicans in the house to switch parties or support a Democratic redistricting plan, here is one way the Democrats could draw a reasonably compact 5-2 map of Colorado.
The two districts that are the most changed under this map are the 3rd and the 4th. The new 3rd is a C-shaped district that includes the Hispanic areas in the Southern part of the state, the liberal rocky mtn ski towns, and some swingy areas in Jefferson county. Despite the fact that the Jeff Co areas are swing regions, this district is safely Democratic as those areas only make up about one third of the district’s population. A GOP candidate could get up to 60% of the vote in the Jeff Co part of this district and still lose overall due to the heavy Democratic lean of the other areas. The one problem with this district is that rep Ed Perlmutter actually lives here. This shouldn’t be a problem in terms of losing to a Republican (he’s more vulnerable in his old district than here), but he may not want to represent a district composed of so much new territory.
The new 4th is composed of Greeley, Fort Collins-Loveland, and some mainly Hispanic areas in Weld and Adams counties. Between the white liberals in Greeley and Fort Collins and the Hispanics in Adams Co, it should be all but safe democratic. I could see this district maybe going red in a midterm year with low Hispanic turnout, but even that would probably be a stretch, and getting less likely with every passing year as this area trends more and more democratic. Still this is probably the least Democratic of the 5 D districts on this map, which is a testament to how Democratic this map is more than anything else.
The 2nd district around Boulder is almost unchanged. The 1st has shed some areas in Denver Co to the 7th and gained some suburban areas around Littleton in order to shore up the 7th. The 1st is now less Democratic but still enough for Diana DeGette to be completely safe. The 7th has lost a lot of territory in Adams and Jefferson counties, but it has gained some African-American and mixed African-American and Hispanic areas in Denver along with some areas in Weld and Morgan counties. At 59% White it is the most minority-heavy of all these districts, and should be much safer for Democrats now. Lastly, the 5th and 6th serve as GOP vote dumps in Colorado Springs and the outer areas of the state, respectively.
UPDATE
There was some discussion in the comments of the potential effects of the VRA on Colorado. It is actually possible to draw a compact plurality-hispanic district in Denver and Adams Co. My initial guess was that this would wind up hurting Democrats significantly. This turned out to be partially true, but much less than I originally thought. The basic methodology of the map remains the same; Draw a C-shaped district combining the Denver suburbs, the Hispanic areas in South CO, and the liberal ski towns, and attach Fort Collins and Greeley to something other than ruralconservativeland. It turns out looking like this:
Denver Area:
Under this map, the 1st district is 43% W, 8 %B, 44% H. It is possible to make it as much as 39-ish percent white if you want to, but once it crosses the 50% non-white line there is no legal obligation to make it more non-white so I decided to leave it 43% white in order to make the surrounding districts safer. One big change under this map is that the 4th is now drawn down to Boulder instead of Adams Co. This saves the Democrats the trouble of having to find someone to run in what was under the first map their weakest district. The other change is that the 2nd district is now mainly a Jefferson Co based district, with a bit of Arapahoe Co and the SW tip of Denver Co thrown in. This is probably the worst thing for the Democrats on this map, as I suspect the PVI of this district is something like D+2 or 3, making it only a slightly D-leaning seat. It also has no incumbent, as rep Perlmutter’s home is still in the 3rd. This area is trending Democratic very quickly, though, so if the Dems have to draw a VRA seat then I wouldn’t totally freak out about this one. The 7th, having lost a lot of nonwhite territory to the 1st, now has taken on the majority-white sections of Denver. I don’t know where Rep Diana DeGette lives in Denver, however I would guess she probably lives in one of the mainly white areas, so she probably runs in the 7th under this map, opening up the new 1st for a Hispanic representative. The 7th, like the 4th, has probably moved towards the Democrats under this map. The 3rd, OTOH, has moved to the GOP here, as it has taken on the rural areas previously in the 2nd, a tiny part of Douglas Co, and Crowley and Otero counties in the south which are GOP leaning but have significant Hispanic minorities. Overall, this new 3rd is probably Likely D at worst. So the net shift to the GOP from creating a new Hispanic-plurality district is at most one district. The biggest loser under this new VRA scenario seems to be compactness and community-of-interest contiguity (I particularly don’t like the idea of splitting Denver Co between multiple districts), not necessarily the Democratic Party.