Good so you see and are abstaining from going on with Acts 15.
"Therefore let no one pass judgment on you in questions of food and drink, or with regard to a festival or a new moon or a Sabbath. These are a shadow of the things to come, but the substance belongs to Christ. Let no one disqualify you, insisting on asceticism and worship of angels, going on in detail about visions, puffed up without reason by his sensuous mind, and not holding fast to the Head, from whom the whole body, nourished and knit together through its joints and ligaments, grows with a growth that is from God.
If with Christ you died to the elemental spirits of the world, why, as if you were still alive in the world, do you submit to regulations— “Do not handle, Do not taste, Do not touch” (referring to things that all perish as they are used)—according to human precepts and teachings? These have indeed an appearance of wisdom in promoting self-made religion and asceticism and severity to the body, but they are of no value in stopping the indulgence of the flesh." - Colossians 2:16-23
Let starts in verse 13.
Col 2:13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses;
The issue forgiveness of all trespasses. The verse ends with a semi colon. This denotes that whatever follows is connected to what was before the semi colon. We are now forgiven of all our sins. We no longer have to go to the temple and utilize the Levitical priesthood in relation to our sins.
Col 2:14 Blotting out the handwriting to the ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross;.
It was the handwriting to the ordinances that were blotted out and only those which were against us. Those that past condemnation upon us when we sinned.
Verse 16 Sabbath is being said in context to the handwriting to the ordinances. Not the Ordinances themselves and certainly not the Decalogue.
"I know and am persuaded in the Lord Jesus that nothing is unclean in itself, but it is unclean for anyone who thinks it unclean. - Romans 14
The Greek word there translated unclean is Koinos. It means common not unclean. There were animals considered common and animals that were considered unclean. This distinction is made in Acts 9 when Peter's vision is revealed.
And he became very hungry, and would have eaten: but while they made ready, he fell into a trance, And saw heaven opened, and a certain vessel descending unto him, as it had been a great sheet knit at the four corners, and let down to the earth: Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air. And there came a voice to him, Rise, Peter; kill, and eat. But Peter said, Not so, Lord;
for I have never eaten any thing that is common or unclean. And the voice spake unto him again the second time, What
God hath cleansed, that call not thou common.
(Act 10:10-15 KJV)
The word OR is A primary particle of distinction between two connected terms. In this instance the distinction is being made between what is common and unclean. The fact that clean animals where in the sheet intermingling with the unclean animals is what made the clean animals common or ceremonial unclean themselves. The second thing to notice is GOD's reply. HE only mentions cleansing the common not the unclean.
"'All things are lawful,' but not all things are helpful. 'All things are lawful,' but not all things build up. Let no one seek his own good, but the good of his neighbor. Eat whatever is sold in the meat market without raising any question on the ground of conscience. For 'the earth is the Lord's, and the fullness thereof.' If one of the unbelievers invites you to dinner and you are disposed to go, eat whatever is set before you without raising any question on the ground of conscience. But if someone says to you, “This has been offered in sacrifice,” then do not eat it, for the sake of the one who informed you, and for the sake of conscience— I do not mean your conscience, but his. For why should my liberty be determined by someone else's conscience? If I partake with thankfulness, why am I denounced because of that for which I give thanks?
So, whether you eat or drink, or whatever you do, do all to the glory of God. Give no offense to Jews or to Greeks or to the church of God, just as I try to please everyone in everything I do, not seeking my own advantage, but that of many, that they may be saved." - 1 Corinthians 10:23-33
The context is not knowing what you are served in respects to things sacrificed not the animals GOD had said we were not to eat because they were unclean .