The phrase "a consistent theme for" is correct and usable in written English.
It can be used when discussing a recurring idea or motif that is relevant to a particular subject or context.
Example: "The author explores a consistent theme for the importance of friendship throughout the novel."
Alternatives: "a recurring motif for" or "a steady theme for".
The value of choice has been a consistent theme for the president and his administration.
Although details are not yet available, advertising with a consistent theme for 501s will appear around the world in television, print, cinema and the internet to show off the product's new fit and fabrics.
Similarly, the study by Song and Parry (1996) mentions that understanding the needs of the customers and awareness about the market is a consistent theme for the success of product development.
If there's a consistent theme for 2016, it's that the bikes are quantitatively lighter, stiffer, more aerodynamic, and more comfortable than what we're currently riding.
Strong clinical leadership appears to be key in the UK, with the need to challenge beliefs about who might be suitable for home HD emerging as a consistent theme for improving patient access to home HD [ 45].
In the Somerset ESD service, for example, a consistent theme of project meetings was the problem of getting accurate data about the numbers of patients going through ESD, and the numbers of those potentially eligible.
He has made the principle that the exercise of military power sets the bargaining table for international relations a consistent theme of his career ever since, and in his 2002 memoir he wrote that one of his lifelong convictions was "the imperative that American power never retreat in response to an inferior adversary's provocation".
Emphasizing "Jewish guilt" for the death of Jesus has been a consistent theme of this play since its creation.
"A consistent theme of mine is authenticity," he said.
Since a consistent theme in the literature for the past 20 years (or more) has been the inability of some nursing homes to change in a meaningful way, especially in the area of quality of care [ 3], in this context improving job satisfaction may be important in improving some aspects of the industry.
