Andúril light with true rgb?

I'm not sure what you mean by the resistor Tones. All the Emisar lights have RGB auxiliaries. All multicolor LEDs use separate RGB emitters grouped close together. It is more obvious with the small ones, like the ones used for auxiliaries, but it's true of all of them.

The aux LEDs are ON-high/ON-low/OFF and not controlled via PWM due to power consumption concerns for indicator aux LEDs that are designed to be ON all the time. With PWM the MCU has to stay awake and it would draw the cell too fast, due to that aux LED PWM control has not been implemented.

With the T1616 there might be a way to do PWM with relatively low power consumption, but that hasn't been tried yet.

So you could have an infinitely color changing flashlight? That would be kinda neat. Don't really want to have to use an app to change the color though. It would be kind of hard to implement with a single switch control.

Aux can't be set to anything but high or low, so advanced colour mixing can't be done, if that's what you mean.

It is possible in theory to use some colours on low and some on high at the same time, but the brightness difference would make the low invisible.

Also, it can't be done with PWM because the MCU wouldn't be able to sleep when the light was off/locked, and there aren't enough free PWM counters IIRC anyway.

Maybe if there was a smarter RGB LED, that could have 3 values set via serial and it has a chip on it to do the processing and adjust its outputs, but such a device would be too large to fit where the current aux LEDs go on any light.

true RGB... instead of the resistor ones

Do you mean like individually controllable with infinite colors instead of 7?

No. No Anduril lights have that. I don't think it's possible with how they're connected to the MCU.