The Temperature slider changes the overall warmth or coolness of the picture. Rather than functioning like digital white balance, which can introduce abrupt shifts, this adjustment is shaped to flow more smoothly within the film color response. You can think of it as a way to add a warm (yellow/orange) or cool (blue) feeling to the picture, in a way that blends naturally with the film-like color handling.

On the left, temperature is set to 0.750. On the right, default.

On the left temperature is set to -0.750. On the right, default.