Camera device (labels appear after first permission grant):
Figure → Fluid
Swirl feedback
The sim's own local swirl strength can retune its colour and re-amplify its own shape. Safe — still governed by Max speed above.
Fluid feel
Colour
Hue offset picks which colours are in play (rotates the wheel); hue range narrows it from a full rainbow down toward a single hue.
Swirls are limited to a smooth loop through exactly these 3 colours.
Circular mask
Crops the output to a circle — everything outside it is black.
Output display
Opens a second, borderless window running its own copy of the fluid — pure output, no controls, synced live to everything on this panel.
Output window: not open
Positions the output window to exactly cover the chosen display. Then click inside the output window once and press F to go true fullscreen there (no on-screen button — that window shows nothing but the fluid).