The phrase "and remark upon" is correct and usable in written English.
It can be used when you want to indicate that someone is making a comment or observation about something.
Example: "During the meeting, she took the opportunity to share her thoughts and remark upon the recent changes in policy."
Alternatives: "and comment on" or "and note".
One can imagine many transformative uses of the "I have a dream" speech — from posting it in social media platforms for people to share and remark upon, to quoting the text in song lyrics or in a film, documentary or other artistic work to conjure the strivings for social equality that were the essence of King's speech and to celebrate a sense of shared accomplishment that followed.
And remark upon the colors.
After placing Saturn, the friends turn back to the model of the sun -- about a mile away -- and remark upon how tiny and distant it looks.
As he approached the town church, he gave a running commentary on its architecture, then later on its internal monuments, brasses, pulpits, rood-screens, before marching off to inspect and remark upon the local manor house, the 16th-century pub, the 18th-century folly and so on.
Surely someone, at some point, was expected to notice and remark upon these things.
The most remarkable —and remarked upon— fact about Mexico's "drug war" is the staggering number of homicides in the country.
Two days ago, he tweeted from Paris where he said he was "struck by the positive energy" and remarked upon the "good food".
The Year of Magical Thinking was the first thing Didion had written for 40 years that John had not read first and remarked upon.
The newspaper pronounced that "Protection was quite as much a cause of the disruption of the Union as Slavery," and remarked upon how the Morrill Tariff had "much changed the tone of public feeling" in favor of "the Secessionists".
The Costa Poetry Award 2013 went to Michael Symmons Roberts's Drysalter (2013), a sensory collection of 150 poems each of 15 lines evoking hymns or prayers and remarked upon for their "calm, poised precision".
Yet the curmudgeonly writer managed more expansive moments, gesturing toward the historic nature of that year's award and remarking upon the state of American literature at the time, and on its status in the world.
