Colossians does clearly refer to Christ as the person through whom all things are made.
...in him all things were created, in heaven and on earth, visible
and invisible, whether thrones or dominions or principalities or
authorities—all things were created through him and for him. (Col.
And I would agree with the OP that Heb. 2:10 clearly implies that someone other than than the Son causes Christ's perfection through suffering. Otherwise, the verse would slip into the error of confusing the Father and the Son. However, since trinitarian theology was not highly developed when Hebrews was written, it may be that that the "Him" referred here is simply God, rather a specific Person of the Trinity.
Indeed, many translators substitute "God" for "him" in Hebrews 2:10, possibly in an effort to avoid the very question of choosing between the Father and the Son here.