Temperature overlay - a slider for base temp

[Eleyvie]

With extra-hot and extra-cold maps added, temperature overlay frequently becomes useless as it cannot distinguish between -50 and +5 Celsius, even though from the player's perspective they're totally different.

So it would be super-nice if there was a setting and/or slider on temperature overlay which would allow me to set the "base" temperature - essentially letting me examine an arbitrary temperature window in a greater detail, moving that window up and down along the temperature scale as I wish.