I meant I could see a change to the property of something like color with an adjective and not that we can consider "flesh" to be a adjective.If we suspend our rational and grammatical mind and take σὰρξ as an adjective (in order to salvage our doctrine), then the verse would still be saying that something about the Logos changed. I'm not sure Trinitarian doctrine allows for any change in the Logos itself, since Logos is supposed to be 100% who and what it was even after the so-called "Incarnation." The "appearance of" God (i.e. of the Logos) changed? God no longer looked like what he was prior to the "Incarnation" ?
But more troubling is the fact that such an understanding (taking σὰρξ as an adjective) denies that Jesus became a human being, (only that his appearance changed). This is the Spirit of anti-Christ which the apostle warned about:
2 John 1:7
This verse clearly is an allusion to John 1:14 and all those who abuse it, where the apostle says that the Logos (not it's color or it's appearance) became a human being.
But now that you mention it that's how some incorrectly take θεος to be θείος at J 1:1c. And neither do we find σάρκινος at J 1:14.