The Miller went a little nuts, but bunch of info here in post #2 of the GB thread: https://budgetlightforum.com/t/-/39069/2. I got a manual posted in docx and PDF format - link is there in the post, and a video showing the ramping - some minor tweaks made since the video, so needs to be updated.
With Narsil, one of 12 mode sets can be selected (1 to 8 modes), or, a smooth ramping UI (150 levels). Moon mode level can actually be user tweaked. My 4X SRK clone has it with 0.1 lumens to ~5,400 lumens in a 3D NW tint. Also have it in a Skilhunt H15, using a color SMD LED in the switch as a locator/LVP indicator.
Yea, I do like Bistro as well. Actually stole/borrowed some code from Bistro so we have some shared bode in both.