This theology is like a drunk driver slapping a fish sticker on the back of his car and continuing to drive drunk. It only makes sense if you read the Letter of Paul to the Collosians as the Letter of Paul to ME.
For starters, "sabbaths" here is not capitalized. It refers to Jewish Holidays, not the weekly Sabbath. Secondly, Paul was called to convert Gentiles. He went to the sun worshipping people and taught them how to worhip the God of Abraham, Jacob, Isaac, and Jesus. These people would likely have already been worshipping on Sunday and if it was Paul's intent to have them worship on Sunday, then he would have had to say exactly nothing.
Jesus came to fulfill the law not to end it. If you keep reading you may come across the following passages:
Rom 2:13 For it is not the hearers of the Law who are just before God, but the doers of the Law will be justified.
Rom 3:31 Do we then make the Law void through faith? Let it not be! But we establish the Law.
Now if the Sabbath was not important, why did the author of the article erroneously date his paper as "Sabbath" when he obviously meant Sunday. If the Sabbath is not important anymore, why are so many people trying so hard to equate it with Sunday? One of three things must be true; either Sabbath is Sabbath and it matters, Sunday turned into Sabbath, or Jesus is Sabbath. All 3 cannot be true.
Rom 2:13 For it is not the hearers of the Law who are just before God, but the doers of the Law will be justified.
Rom 3:31 Do we then make the Law void through faith? Let it not be! But we establish the Law.
Are you saying that you/we are to keep the Law as opposed to being driven to Christ by our inability to keep it?
And by that I do not mean the the Law is null & void, or of no use, far from it.
These Newly converted Colossians had been, just a short time before, Pagan Greeks. They would have no knowledge of God's dietary regulations, New Moon observances, Religious Festivals or Sabbaths. Paul is here instructing the observance of these things and telling these novice Christians to ignore any and all criticism of it.
Earlier in verse 8 Paul has told them to also ignore hollow and deceptive philosophy....which depends on human tradition and the basic principles of this world. Somehow, I cannot equate God's Religious Festivals, New Moon Observances, Sabbaths and dietary regulations with human traditions.