fix: one colour picker everywhere, and its panel lands under its button

The note-separator, page-decoration and table-line colours were native
<input type=color> or a 20-swatch grid; they now open the app's own picker,
which grew a swatch-only variant (no icon) for a dialog field plus a
disabled state. Its panels move to the top layer: a transformed ancestor is
the containing block for position:fixed, and the floating table toolbar has
one — cell shading opened its palette in the bottom-right corner.

src/lib/components/ColorPicker.svelte

@@ -12,6 +12,7 @@
     chevronTitle,
     clearLabel,
     open = $bindable(false),
+    disabled = false,
     onApply,
     onClear,
     onOpen,
@@ -25,10 +26,12 @@
     chevronTitle: string;
     clearLabel?: string;
     open?: boolean;
+    disabled?: boolean;
     onApply: (color: string, range: { from: number; to: number }) => void;
     onClear: (range: { from: number; to: number }) => void;
     onOpen?: () => void;
-    icon: Snippet;
+    // A toolbar button's glyph. A dialog field passes none and is the swatch alone.
+    icon?: Snippet;
   } = $props();
 
   // Row 1 = greyscale, row 2 = standard hues. Rows 3–7 are generated per column
@@ -80,6 +83,10 @@
   // The panels are `fixed` and placed from the button's rect, so a scrolling
   // ancestor (the style manager's field column) can't clip them.
   let split = $state<HTMLElement>();
+  // …and they live in the top layer, whose containing block is the viewport whatever
+  // sits above the button: a transform makes an ancestor the containing block for
+  // `fixed`, and the floating table toolbar has one (it hangs itself above the table).
+  const topLayer = (node: HTMLElement) => node.showPopover();
   let panel = $state<HTMLElement>();
   let pos = $state({ top: 0, left: 0 });
 
@@ -416,18 +423,20 @@
 
 <div class="color-picker" use:colorPickerClickOutside>
   <div class="color-split" bind:this={split}>
-    <button class="color-main" onclick={quickApplyColor} {title}>
-      {@render icon()}
-      <span class="color-bar" style="background: {lastColor}"></span>
+    <!-- A toolbar button re-applies its last colour and shows it; a dialog field is one
+         value, so its swatch reads that value and every click opens the palette. -->
+    <button class="color-main" class:swatch={!icon} onclick={icon ? quickApplyColor : openPicker} {title} {disabled}>
+      {#if icon}{@render icon()}{/if}
+      <span class="color-bar" style="background: {icon ? lastColor : (currentColor || defaultColor)}"></span>
     </button>
-    <button class="color-chevron" onclick={openPicker} tabindex="-1" title={chevronTitle}>
+    <button class="color-chevron" onclick={openPicker} tabindex="-1" title={chevronTitle} {disabled}>
       <svg width="8" height="8" viewBox="0 0 8 8" fill="none" aria-hidden="true">
         <path d="M1 2.5l3 3 3-3" stroke="currentColor" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"/>
       </svg>
     </button>
   </div>
   {#if open && view === 'palette'}
-    <div class="color-dropdown" bind:this={panel} style="top: {pos.top}px; left: {pos.left}px">
+    <div class="color-dropdown" popover="manual" use:topLayer bind:this={panel} style="top: {pos.top}px; left: {pos.left}px">
       <div class="color-title">{title}</div>
       <button
         class="color-automatic"
@@ -473,6 +482,7 @@
   {/if}
   {#if open && view === 'custom'}
     <div class="color-window" role="dialog" aria-label={t().color.chooseColor}
+      popover="manual" use:topLayer
       bind:this={panel} style="top: {pos.top}px; left: {pos.left}px">
       <div class="color-window-body">
         <div
@@ -555,6 +565,18 @@
     border-radius: 1px;
   }
 
+  /* No glyph above it, so the bar is the button: a swatch, outlined so white still
+     reads against the surface. */
+  .color-main.swatch .color-bar {
+    width: 22px;
+    height: 14px;
+    border-radius: 2px;
+    box-shadow: inset 0 0 0 1px var(--color-border);
+  }
+
+  .color-split:has(button:disabled) { opacity: 0.5; }
+  .color-split button:disabled { cursor: default; }
+
   .color-chevron {
     display: inline-flex;
     align-items: center;
@@ -575,6 +597,15 @@
     background: var(--color-btn-hover);
   }
 
+  /* A popover carries the UA's own centring (`inset: 0; margin: auto`), which would
+     beat the top/left placed above. */
+  .color-dropdown,
+  .color-window {
+    inset: auto;
+    margin: 0;
+    overflow: visible;
+  }
+
   .color-dropdown {
     position: fixed;
     background: var(--color-surface);

src/lib/components/NoteOptionsDialog.svelte

@@ -3,6 +3,7 @@
     DEFAULT_NOTE_SETTINGS, type NoteKind, type NoteNumFormat, type NoteRestart, type NoteSettings,
   } from '../storage/noteSettings';
   import { noteSettings, setNoteSettings } from '../storage/notes.svelte';
+  import ColorPicker from './ColorPicker.svelte';
   import { styleSheet } from '../styles/sheet.svelte';
   import { formatOrdinal } from '../utils/orderedListTypes';
   import { t } from '../i18n/i18n.svelte';
@@ -152,10 +153,18 @@
             {#each ALIGNS as a}<option value={a}>{t().align[a]}</option>{/each}
           </select>
         </label>
-        <label class="row">
+        <div class="row">
           <span>{t().notesDialog.sepColor}</span>
-          <input type="color" value={sep.color} onchange={(e) => patchSep({ color: e.currentTarget.value })} />
-        </label>
+          <ColorPicker
+            editor={null}
+            currentColor={sep.color}
+            defaultColor={sep.color}
+            title={t().notesDialog.sepColor}
+            chevronTitle={t().notesDialog.sepColor}
+            onApply={(c) => patchSep({ color: c })}
+            onClear={() => patchSep({ color: DEFAULT_NOTE_SETTINGS.separator.color })}
+          />
+        </div>
       </fieldset>
     {/if}
 
@@ -224,7 +233,6 @@
     padding: 0 6px;
     font: inherit;
   }
-  input[type='color'] { width: 44px; padding: 2px; }
   .affix { width: 68px; }
 
   .actions { display: flex; align-items: center; gap: 8px; }

src/lib/components/PageDecorDialog.svelte

@@ -4,6 +4,7 @@
     type PageBorder, type PageDecor, type Watermark,
   } from '../storage/pageDecor';
   import { t } from '../i18n/i18n.svelte';
+  import ColorPicker from './ColorPicker.svelte';
 
   // LibreOffice's Format ▸ Page Style ▸ Area and Borders plus its Format ▸ Watermark,
   // in one panel — all three decorate the page and all three ride the page layout.
@@ -13,6 +14,8 @@
   } = $props();
 
   let dialogEl = $state<HTMLDialogElement | null>(null);
+  // The colour a page background starts at, LibreOffice's own first "recent" yellow.
+  const DEFAULT_BACKGROUND = '#FFFFCC';
 
   $effect(() => {
     const el = dialogEl;
@@ -43,32 +46,49 @@
 
     <fieldset>
       <legend>{t().pageDecor.background}</legend>
-      <label class="row">
-        <input
-          type="checkbox"
-          checked={!!decor.background}
-          onchange={(e) => (decor = { ...decor, background: e.currentTarget.checked ? (decor.background ?? '#ffffcc') : null })}
+      <div class="row">
+        <label class="grow">
+          <input
+            type="checkbox"
+            checked={!!decor.background}
+            onchange={(e) => (decor = { ...decor, background: e.currentTarget.checked ? (decor.background ?? DEFAULT_BACKGROUND) : null })}
+          />
+          <span>{t().pageDecor.useBackground}</span>
+        </label>
+        <ColorPicker
+          editor={null}
+          currentColor={decor.background ?? null}
+          defaultColor={decor.background ?? DEFAULT_BACKGROUND}
+          title={t().pageDecor.background}
+          chevronTitle={t().pageDecor.background}
+          onApply={(c) => (decor = { ...decor, background: c })}
+          onClear={() => (decor = { ...decor, background: null })}
         />
-        <span>{t().pageDecor.useBackground}</span>
-        <input
-          type="color"
-          value={decor.background ?? '#ffffcc'}
-          onchange={(e) => (decor = { ...decor, background: e.currentTarget.value })}
-        />
-      </label>
+      </div>
     </fieldset>
 
     <fieldset>
       <legend>{t().pageDecor.border}</legend>
-      <label class="row">
-        <input
-          type="checkbox"
-          checked={!!decor.border}
-          onchange={(e) => (decor = { ...decor, border: e.currentTarget.checked ? (decor.border ?? DEFAULT_PAGE_BORDER) : null })}
+      <div class="row">
+        <label class="grow">
+          <input
+            type="checkbox"
+            checked={!!decor.border}
+            onchange={(e) => (decor = { ...decor, border: e.currentTarget.checked ? (decor.border ?? DEFAULT_PAGE_BORDER) : null })}
+          />
+          <span>{t().pageDecor.useBorder}</span>
+        </label>
+        <ColorPicker
+          editor={null}
+          currentColor={decor.border?.color ?? DEFAULT_PAGE_BORDER.color}
+          defaultColor={decor.border?.color ?? DEFAULT_PAGE_BORDER.color}
+          title={t().pageDecor.border}
+          chevronTitle={t().pageDecor.border}
+          disabled={!decor.border}
+          onApply={(c) => patchBorder({ color: c })}
+          onClear={() => patchBorder({ color: DEFAULT_PAGE_BORDER.color })}
         />
-        <span>{t().pageDecor.useBorder}</span>
-        <input type="color" value={decor.border?.color ?? DEFAULT_PAGE_BORDER.color} onchange={(e) => patchBorder({ color: e.currentTarget.value })} />
-      </label>
+      </div>
       <label class="row">
         <span class="grow">{t().pageDecor.borderWidth}</span>
         <input type="number" min="0.25" max="20" step="0.25" disabled={!decor.border}
@@ -95,11 +115,19 @@
           }}
         />
       </label>
-      <label class="row">
+      <div class="row">
         <span class="grow">{t().pageDecor.watermarkColor}</span>
-        <input type="color" value={decor.watermark?.color ?? DEFAULT_WATERMARK.color} disabled={!decor.watermark}
-          onchange={(e) => patchWatermark({ color: e.currentTarget.value })} />
-      </label>
+        <ColorPicker
+          editor={null}
+          currentColor={decor.watermark?.color ?? DEFAULT_WATERMARK.color}
+          defaultColor={decor.watermark?.color ?? DEFAULT_WATERMARK.color}
+          title={t().pageDecor.watermarkColor}
+          chevronTitle={t().pageDecor.watermarkColor}
+          disabled={!decor.watermark}
+          onApply={(c) => patchWatermark({ color: c })}
+          onClear={() => patchWatermark({ color: DEFAULT_WATERMARK.color })}
+        />
+      </div>
       <label class="row">
         <span class="grow">{t().pageDecor.watermarkAngle}</span>
         <input type="number" min="-180" max="180" step="5" disabled={!decor.watermark}
@@ -153,6 +181,7 @@
   .row { display: flex; align-items: center; gap: 8px; padding: 3px 0; }
   .row .grow { flex: 1; color: var(--color-text-muted); }
   .row span { color: var(--color-text-muted); }
+  .row label.grow { display: flex; align-items: center; gap: 8px; }
 
   input[type='text'], input[type='number'] {
     height: 26px;
@@ -164,7 +193,6 @@
     padding: 0 6px;
     font: inherit;
   }
-  input[type='color'] { width: 44px; height: 26px; padding: 2px; border: 1px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); }
   input:disabled { opacity: 0.5; }
 
   .actions { display: flex; align-items: center; gap: 8px; }

src/lib/components/TableBorderPicker.svelte

@@ -2,6 +2,7 @@
   import type { Editor } from '@tiptap/core';
   import { activeBorderPresets, type BorderPreset } from '../editor/extensions/tableCellBorders';
   import { t } from '../i18n/i18n.svelte';
+  import ColorPicker from './ColorPicker.svelte';
 
   let { editor, tick }: { editor: Editor | null; tick: number } = $props();
 
@@ -11,12 +12,6 @@
   let color = $state('#000000');
 
   const WIDTHS = [0.5, 1, 1.5, 2.25, 3];
-  // Greyscale + standard hues (the first two ColorPicker palette rows).
-  const COLORS = [
-    ['#000000', '#1A1A1A', '#333333', '#4D4D4D', '#666666', '#808080', '#999999', '#B3B3B3', '#CCCCCC', '#FFFFFF'],
-    ['#C00000', '#FF0000', '#FFC000', '#FFFF00', '#92D050', '#00B050', '#00B0F0', '#0070C0', '#002060', '#7030A0'],
-  ];
-
   // Preset icons: 6 segments (outer edges + the two inner grid lines); "on" segments
   // draw solid, the rest as faint guides.
   type Seg = 'top' | 'right' | 'bottom' | 'left' | 'h' | 'v';
@@ -136,22 +131,16 @@
       </div>
 
       <div class="bp-title">{t().borders.lineColor}</div>
-      <div class="bp-colors">
-        {#each COLORS as row}
-          <div class="bp-color-row">
-            {#each row as c}
-              <button
-                class="bp-color"
-                class:active={color === c}
-                style="background: {c}"
-                title={c}
-                aria-label={c}
-                onclick={() => (color = c)}
-              ></button>
-            {/each}
-          </div>
-        {/each}
-      </div>
+      <ColorPicker
+        editor={null}
+        currentColor={color}
+        defaultColor={color}
+        title={t().borders.lineColor}
+        chevronTitle={t().borders.lineColor}
+        clearLabel={t().color.automatic}
+        onApply={(c) => (color = c)}
+        onClear={() => (color = '#000000')}
+      />
     </div>
   {/if}
 </div>
@@ -279,34 +268,4 @@
     background: currentColor;
   }
 
-  .bp-colors {
-    display: flex;
-    flex-direction: column;
-    gap: 2px;
-  }
-
-  .bp-color-row {
-    display: flex;
-    gap: 2px;
-  }
-
-  .bp-color {
-    width: 18px;
-    height: 18px;
-    min-width: unset;
-    padding: 0;
-    border: 1px solid var(--color-border);
-    border-radius: 2px;
-    cursor: pointer;
-    transition: transform 0.05s;
-  }
-
-  .bp-color:hover {
-    transform: scale(1.15);
-  }
-
-  .bp-color.active {
-    outline: 2px solid var(--color-primary);
-    outline-offset: 1px;
-  }
 </style>