fireflies wandering glow
Softly glowing lights wandering on lazy paths, each blinking on its own rhythm.

Properties
| key | type | default | meaning |
|---|---|---|---|
count | integer | `25` | Number of fireflies. |
color | [r,g,b,a] | `[0.72, 1.0, 0.18, 0.95]` | Glow color (warm yellow-green); alpha is the peak flash brightness. |
radius_px | float | `2.5` | Core radius in logical px; the visible halo extends about 4x beyond it. |
flash_sharpness | float | `0.4` | Blink character, 0 to 1: `0` is gentle continuous pulsing, `1` is brief sharp flashes with long dark gaps. |
every key is optional; omit it and the default applies. misspelled keys are silently ignored, so if a setting seems to do nothing, check the spelling against this table. colors are 0.0–1.0 float arrays.