Colossians 1 shows and most of the OT[the theophany of the Angel of the Lord]show Jesus was before the foundation of the world....Jesus himself mentions he was with the Father before the foundation of the world many times....this does not strip away his deity, it enforces it....
I believe you mean Colossians 15-20:
Now if a clear context is not applied in these verses, and collectively you can have Jesus being the start of everything etc.... which I will show is not true.
You know that many of the Colossians were angel worshippers. They struggled with the concept that the Lord Jesus was their Lord. They were listening to false teachers. They had to be straightened out of their errors.
Note that this in the first verse it says that Christ and not God is the image of the invisible God. Meaning he represents God in all ways and is sufficient for us. This is expected.
Now if the meaning in verse 15 was meant to say that Jesus was God, it would have said this very clearly there, upfront.
Now there are some misinformed scholars out there that have misused the word, Greek word 'eikon' to mean manifestation instead of a copy or image, and not the real thing or substance. They have exaggerated its meaning for their purpose(s).....it is one thing to call someone an icon they to later believe it really meant that the icon is really the original living inside it or him or her...this would be plain and simply idolatry, right?
Further, this Greek word is used over 2 dozen times in scripture and always means a copy or icon, a symbol etc, and never the real thing that is manifested into it...
Verse 16: I've raised this area before. The words, thoughts and meanings of the 1st century versus the 21st century can be quite difference. In this verse 16 the word I'm focusing on is 'all.' It was not meant to mean everything in existence etc. It has a limited meaning, just like forever, in other places of the Bible.
His or through the Lord Jesus Christ specific things were created; not everything in existence.
God, his Father delegated or gave him authority to create these things. And what were they?
As it says,"... things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things were created by him and for him..."
Jesus created these positions of power since his resurrection. As Matthew at least says, He was given all authority over heaven and on the earth. He is ruler today with permission by his Father. We have to keep all this in context because we cannot lose sight of why this scripture was written to the Colossians in the first place. We can easily drift off and extract another meaning to another setting and context...
Verse 17. keeping context again... Jesus is 'before' these things already spoken of in verse 16. Jesus has the priority or more important that these things he created...and he keeps this creation intact under is own power..again delegated by his Father.
Verse 18: Jesus is head of the believers, the first human to be resurrected so that he would be in charge...and do the things in verse 17.
Verse 19: For God, his Father was please in giving him the power requires to do all these things....
Verse 20: And through Jesus' power and (at least the necessary portions) spirit of God he maintained in fellowship or union with his believers (spirit of Truth) and all things he creates...