Review findings from a screenshot of the Stream Alerts panel, each addressed:
- "Reset to built-in" and "Browse…" were YtButton-derived (white, semi-bold, 13px), so a reset
action outranked the section header. Property-panel actions now use PropertyButton: bordered,
11px, normal weight, OnSurface text.
- Explanation text and field labels were the same muted blue-gray. PropertyHint is now
OnSurfaceDisabled, one clear step below a label.
- Groups inside a category ran together. PropertyDivider (1px OutlineVariant) separates Video,
Sound byte and Message ticker.
- The disabled loop switch was near-invisible. Disabled now keeps the label at OnSurfaceVariant
and dims the whole control to 0.55 — readable, obviously inactive.
- Switch "on" was full-strength accent, shouting about static state. The track now sits at 0.6
opacity when on, which also stops it competing with the slider's accent fill.
No new palette entries: every change uses an existing token, so DESIGN.md stays the one colour
source. Release 0 warnings; token and typography tests pass.