[arghwhat]

Hmm, but that will only get us red, and if we're persistent enough, white. That's not good enough for RGB!

[wincy]

Let’s add a propane torch in there so we can get an authentic blue color!

[anticensor]

And we would have lngctl to control the flow rate. Occasionally crashing and leading to fires.

[dusted]

Shouldn't we be able to get all colors except pink ?

[arghwhat]

The color a black body emits at certain temperatures follow the planckian locus (https://en.wikipedia.org/wiki/Planckian_locus). The only saturated primary color on that curve is red.