I went ahead and just ordered the kit anyway.
If you follow the link, you'll see that it's marked down even further as a "deal of the day".
Seems like a good buy to me even if only the tube is Colt. (06/09/20)
**Now I see the price went back up so it seems like I got a nice deal. Fingers crossed, waiting for it to ship to me.** (06/12/20)