If you think that Paul is saying that the holy days God commanded to be observed in scripture are no longer to be observed than you must believe Paul is a liar or an idiot.
You must believe that because Paul says that he is talking about these kinds of practices in Colossians 2:
Col 2:8 Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
The Lord's feast days are NOT philosophy or vain deceit. They are not traditions of men. They are not rudiments of the world. They are divine commandments from the living God.
Col 2:20 Wherefore if ye be dead with Christ from the rudiments of the world, why, as though living in the world, are ye subject to ordinances,
Col 2:21 (Touch not; taste not; handle not;
Col 2:22 Which all are to perish with the using;) after the commandments and doctrines of men?
The Lord's feast days are NOT commandments and doctrines of men, but ARE commandments and doctrines of God.
So you MUST believe that Paul was so idiotic as to believe that scriptural holy days were NOT scriptural...OR that he was lying to the Colossians and telling them that the holy days created by God were actually created by men.
Choose your poison or study God's word further to see where you have erred.
Paul in Colosians and other letters was fighting the judiazers--men who sought to apply the most central Jewish ceremonial law--that which predates all the feasts you mention, going back to Abraham himself--onto the backs of gentile believers.
His arguments were SPECIFICALLY about Jewish ceremonial questions, like feast days, new moons and special Sabbaths...
This verse is DEFINITELY about exactly what you are talking aobut, and refutes you fully--and I think you know that--intellectuallizing to the contrary.
The Acts 15 Council of Jerusalem makes plain (explicitely repeated no less than 3 times in Acts) what the formerly pagan gentile believers were responsible to follow. Avoiding meat sacrificed to idols, eating blood, and sexual immorality. No mention of following Jewish feasts, sorry.
Douglas.....can you find the word "Judaizer" in your Bible?