No. What is it people saying states won by 5 or less by Democrats are unwinnable for Republicans, but no state won by Republicans less than 10 points is considered unwinnable for Democrats. Seriously warped view of reality. Did you guys see that southern Colorado trended Republican, almost offsetting the Democratic trend in the Denver suburbs?
Colorado is basically a west coast version of Virginia. Unwindable for Republicans, trending further left, but a sizable Republican population, which keeps the vote close enough that it's on the radar.
Clinton won by 5, only 3 points more than nationally. 'Unwinnable' is a term I wouldn't use.