Yeah, we can model it with a parametric curve. Think of a piecewise function where the color temperature drops from 3000 K to 6500 K over a fraction of a second, then the hue moves from amber to violet. A logistic curve for the temperature and a linear hue shift for the color wheel gives you a smooth, almost instantaneous transition. But if you want it to feel like a real flicker, add a small sinusoid noise – that’s the controlled chaos I like.