The phrase "a steady theme" is correct and usable in written English.
It can be used to describe a consistent or recurring idea or motif in a piece of writing, art, or discussion.
Example: "Throughout the novel, a steady theme of resilience in the face of adversity emerges, highlighting the characters' struggles and triumphs."
Alternatives: "a consistent motif" or "a recurring theme".
Improving his standing among female voters is critical to his chances for victory, aides said, and Mr. Romney amplified a steady theme of messages aimed at women.
A steady theme of 2011 is the bigger price tags on formal investments as well as the increasingly dedicated education VCs -- think of 2tor's $30+ million, Inkling's $17 million, or Inigral's unprecedented $2 million from the Bill and Melinda Gates Foundation this year.
It is central to his cultivation of popular support and is a regular theme of the steady stream of propaganda on state television, which reports extensively on nefarious American and European — even Russian — schemes to subordinate Belarus.
The book touches, too, on what Byatt calls "one of the steady themes of my writing that I don't understand - as opposed to several that I do.
Taylor is dedicated to entertainment despite her theme: a steady detonation of shocking detail reels you in.
There is, throughout this book, an almost nineteenth-century simplicity and seriousness, Russian in its directness, a steady circling around the theme of "If he is to live, what now?" The second element in Szalay's flight from a certain kind of conventional storytelling comes from film.
Mr. Kotik's score begins with the strings playing a rhythmically steady, unison theme that could pass for medieval chant if it weren't for its oddly chromatic twists.
But the lack of a steady income is a constant theme: when the characters go to a bar it's clear they can only afford one drink; a meter stays on-screen in one episode, ticking away as the account balances dwindle to nothing.
At this juncture, Peck introduces a theme that was a steady yet disconcerting force in Baldwin's young life: movies.
This is a slight variation on what has been a steadily consistent theme from CLF: a steady attack on Minority Leader Nancy Pelosi (D-Calif). as the potential next House speaker should Democrats win back the majority.
As the piece started loosely, as a theme unmoored by a steady rhythm, it ended like that too, the whole group simmering down until there was nothing left to say.
