Really cool aesthetic mod, I'd rate it up there with bullet trails in how it accomplishes a lot with a little.

I don't know if you are going for pure color temperature, or if the fainter blue rays are supposed to symbolise a shift to the ultraviolet spectrum, but """real""" color temperature shifts only a little towards a perciptibly blue color as temperature rises (due to how heat radiation works.) Like a pale cyan at most.

Feel free to disregard this criticism though. Stellar work!

Thanks :D. I already have a bug fix ready (forgot edge cases). But yea I know that it doesn't go that far into the deep blue (mainly because the brightness rises a lot more than the colour gets shifted). I'm mainly thinking of making it customizable in the settings and also using the actual formula to get the colour from the temperature, rather than changing hard coded colours. Its mainly balancing the "how well it looks" and "how believable it is".
Anyway, I'll give it a thought. And thank you for the kind words.