Rhema:
What many Trinitarians don't want to accept is that Trinitarian Bible translators purposely inserted fabrications in certain verses so that it would appear that the Bible supports the Trinity doctrine. But those attempts always fail when one pays attention to the context (surrounding words, verses, and chapters.) The King James Version was translated into English by Trinitarians. So not surprisingly, it's one of the Bibles that has the word "Godhead" within it. Take, for example, the three scriptures that you listed above.
Acts 17:29
"Forasmuch then as we are the offspring of God, we ought not to think that the
Godhead is like unto gold, or silver, or stone, graven by art and man's device." (King James Version)
The context to Acts 17:29 (surrounding verse) tells us Jesus died.
"because He has appointed a day on which He will judge the world in righteousness by the Man whom He has ordained. He has given assurance of this to all by
raising Him from the dead.” (Acts 17:31)
Romans 1:20
"For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made,
even his eternal power and
Godhead; so that they are without excuse:" (King James Version
The context to Romans 1:20 tells us again that Jesus died. See below.
"but who with power was declared God’s Son according to the spirit of holiness by means of
resurrection from the dead—yes, Jesus Christ our Lord."
Colossians 2:9
"For in Him dwells all the fullness of the
Godhead bodily;" (King James Version)
The context to Colossians 2:9 tells us once again that Jesus died, as noted below.
"For you were buried with him in his baptism, and by your relationship with him you were also raised up together through your faith in the powerful work of God, who
raised him up from the dead."
Notice that in all three of scriptures where Godhead was inserted, the context tells us that Jesus died. Scripture at 1 Timothy 6:16 says God cannot die.
New Living Translation
"He alone can never die, and he lives in light so brilliant that no human can approach him. No human eye has ever seen him, nor ever will. All honor and power to him forever! Amen."
Alter2Ego