diff --git a/docs/design/specs/2026-05-29-proposal-callout-color-design.md b/docs/design/specs/2026-05-29-proposal-callout-color-design.md
new file mode 100644
index 0000000..39c509b
--- /dev/null
+++ b/docs/design/specs/2026-05-29-proposal-callout-color-design.md
@@ -0,0 +1,63 @@
+# Proposal Callout Box — Color Update Design
+
+**Date:** 2026-05-29
+**Status:** Approved
+
+## Problem
+
+The proposal callout box (`.proposal` in `idea-post.module.css`) uses `--accent-color` (→ `--ALLEN_GREEN` `#CDEB05`) as its background. The lime green is too bright and reduces readability. It also depletes the accent color's visual impact by using it as a large filled background rather than a sparse highlight.
+
+## Decision
+
+Replace the lime green background with a muted warm-gray fill and an orange left border, using tokens already defined in the design system.
+
+### Color choices explored
+
+- `--ALLEN_ORANGE` (`#FF6E00`) and `--ALLEN_ROSE` (`#FF00FF`) were evaluated as alternatives to `--ALLEN_GREEN`
+- Orange was preferred: warmer, readable, distinctive without competing with the blue primary
+- Orange is kept **exclusively on the proposal callout** — not extended to tags, links, or hero text — so it functions as a semantic signal for actionable/proposal content rather than a general accent
+
+### Callout style chosen
+
+- **Background:** `--PAGE_2` (`#DED9D1`) — warm gray, slightly darker than the page background, clearly delineated without a filled accent color
+- **Border:** 4px solid `--ALLEN_ORANGE` (`#FF6E00`) left border only — provides the color energy at the edge without flooding the reading area
+
+A variant with fading gradient lines on the top and bottom was also considered but rejected in favor of the simpler solid-left-border approach.
+
+## Changes
+
+### `src/style/colors.css`
+
+Update `--callout-box-border-color` (currently pointing to `--GRAY_1`) to point to `--ALLEN_ORANGE`:
+
+```css
+--callout-box-border-color: var(--ALLEN_ORANGE);
+```
+
+### `src/style/idea-post.module.css`
+
+Wire `.proposal` to the callout tokens instead of hardcoding accent and dark colors:
+
+```css
+.proposal {
+    background: var(--callout-box-bg-color);              /* was: var(--accent-color) */
+    border-left: 4px solid var(--callout-box-border-color); /* was: 4px solid var(--bg-dark-color) */
+    padding: 14px 18px;
+    margin: 6px 0;
+}
+```
+
+## What does not change
+
+- `--accent-color` remains `--ALLEN_GREEN` and continues to be used in the hero subtitle and nav hover states
+- `--primary-color` (`--ALLEN_BLUE`) is unchanged on all tags, links, author names, and the post header background
+- No new tokens are added — only `--callout-box-border-color` is redirected
+
+## Token inventory after change
+
+| Token | Value | Used by |
+|---|---|---|
+| `--callout-box-bg-color` | `var(--PAGE_2)` → `#DED9D1` | `.proposal` background |
+| `--callout-box-border-color` | `var(--ALLEN_ORANGE)` → `#FF6E00` | `.proposal` left border |
+| `--accent-color` | `var(--ALLEN_GREEN)` → `#CDEB05` | Hero subtitle, nav hover, header sublabel |
+| `--primary-color` | `var(--ALLEN_BLUE)` → `#6464FF` | Tags, links, post header, idea titles |
diff --git a/src/style/colors.css b/src/style/colors.css
index 977beb4..5d792ca 100644
--- a/src/style/colors.css
+++ b/src/style/colors.css
@@ -41,7 +41,7 @@
     --small-table-border-color: var(--GRAY_1);
     --main-card-header-color: var(--primary-color);
     --callout-box-bg-color: var(--PAGE_2);
-    --callout-box-border-color: var(--GRAY_1);
+    --callout-box-border-color: var(--ALLEN_ORANGE);
 
     /* Layout */
     --content-max-width: 1200px;
diff --git a/src/style/idea-post.module.css b/src/style/idea-post.module.css
index c57253e..c1d47da 100644
--- a/src/style/idea-post.module.css
+++ b/src/style/idea-post.module.css
@@ -162,8 +162,8 @@
 
 /* ── Proposal callout ────────────────────────────────────────── */
 .proposal {
-    background: var(--accent-color);
-    border-left: 4px solid var(--bg-dark-color);
+    background: var(--callout-box-bg-color);
+    border-left: 4px solid var(--callout-box-border-color);
     padding: 14px 18px;
     margin: 6px 0;
     ul {
diff --git a/src/style/theme.ts b/src/style/theme.ts
index 96cebd3..00c3f82 100644
--- a/src/style/theme.ts
+++ b/src/style/theme.ts
@@ -52,7 +52,7 @@ export default {
         colorPrimary: PRIMARY_COLOR,
         colorBgContainer: BG_CONTAINER,
         colorBgLayout: BG_LAYOUT,
-        colorLink: ALLEN_VIOLET,
+        colorLink: LINK_COLOR,
         colorLinkActive: ALLEN_GREEN,
         colorLinkHover: ALLEN_VIOLET,
         borderRadius: 2,