“Paul was commending the Colossians for their keeping of the Sabbath, feasts, and Biblical calendar.”
That would be really funny to the Colossians who weren’t Jewish.
http://www.biblegateway.com/blog/2012/08/letters-to-the-church-colossians/
I’m Catholic and even the protestant bible gateway says they weren’t Jewish.
St Paul preached primarily to Gentile’s who cared not a wit about his thoughts on Jewish practices, just like we don’t care a wit about exactly how far off anybody’s reservation you have wandered.
For the Greater Glory of God
No, the Colossians weren’t Jewish, they were Northern Israelites of the dispersion.
All of the congregations to whom Paul ministered were Lost Sheep of Israel, as Yeshua had commanded.
Paul was commissioned to preach to the gentiles of northern Israel. Northern Israel had already become Goyim (out of covenant)long before they were cast out of the land.
Remember, Yeshua came only to the lost sheep of Israel.