The hex-removal correction set _glow.color = Palette.BLOOD (opaque), which with the 0.5-0.8 modulate pulse read as a near-solid red slab. Restore the intended low alpha via Color(Palette.BLOOD, 0.22) — RGB still from Palette, alpha a numeric param (same idiom as the ember ramp). Whole-branch review catch. Title tests 5/5. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>