That's a great detail to point out in a blog post or photo caption. You could describe it like this:
In this photo of Dusty, I used a photography technique I learned in one of my classes at Penn State. The image combines two very different light sources: the warm indoor lighting and the cool natural light coming through the window. Rather than correcting the color difference, I chose to embrace it, creating contrast between the cozy warmth of the room and the bright daylight outside. The mix of color temperatures adds depth and visual interest while drawing attention to Dusty as the subject.
Or, in a more personal blogging style:
One thing I love about this photo of Dusty is the way it captures two kinds of light at once. The warm glow from inside the room contrasts with the cool daylight coming through the window. It's a photography technique I learned in my Penn State class, and I enjoy how it creates a natural balance between warmth and brightness while highlighting Dusty's personality.
Why these changes?
I translated the technical concept of mixed color temperatures into language that is easy for readers to understand, while still highlighting that you learned the technique in your Penn State photography coursework. The second version feels more personal and reflective for a blog audience.