Created tickets relating to legends, reserved params, timeline ordering, css, etc

tickets/048-multi-accent-and-brighter-theme-variants.md

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+# 048 — Multi-accent and brighter variants for built-in themes
+
+## Summary
+
+`webapp/src/lib/themes.ts` `BUILTIN_THEMES` (dark, light, red, green,
+blue, yellow, pink, orange) are each essentially monotone with a single
+accent color. The wishlist asks for 2-3 accents per theme, plus brighter
+variants of the more muted presets — e.g. keep the current "Green" as-is
+but give it added accents, and introduce a new, brighter "Light Green";
+similarly add suitable additional accents to the default "Light" and
+"Dark" themes.
+
+## Scope
+
+- Extend the `ThemeVars` shape (or the built-in theme records) to carry 2-3
+  accent colors per theme instead of one, and update anywhere a single
+  accent variable is consumed (charts, buttons, highlights) to pick from
+  the accent set appropriately.
+- Add accents to existing "Light" and "Dark" defaults.
+- Add accents to existing colour presets (red, green, blue, yellow, pink,
+  orange) without changing their current base look.
+- Add new brighter variants alongside the existing muted ones (e.g.
+  "Light Green" alongside "Green"), following the same naming pattern for
+  any other presets that warrant a brighter counterpart.
+- Update the settings UI preset picker to list the new theme options.
+
+## Acceptance criteria
+
+- Each built-in theme (existing and new) exposes 2-3 accent colors,
+  consumed by at least the chart palette (see ticket 046) so charts
+  visibly use more than one accent per theme.
+- New brighter variants (at least "Light Green") are selectable in
+  settings and render distinctly brighter than their muted counterpart.
+- Existing theme selections are visually unchanged aside from the added
+  accents (no unrelated base color shifts).
+
+## Depends on
+
+None (pairs well with 047, since accents should apply to
+user-provided/custom styles too where applicable).