diff --git a/.changeset/periwinkle-primary.md b/.changeset/periwinkle-primary.md
index 665a9da0f..e5ec49228 100644
--- a/.changeset/periwinkle-primary.md
+++ b/.changeset/periwinkle-primary.md
@@ -2,4 +2,4 @@
 "@pymodel/pythinker-code": patch
 ---
 
-The TUI's main color (links, inline code, selections, focus, plan and shell mode) is now periwinkle instead of cyan in both the dark and light themes.
+The TUI's main color (links, inline code, selections, focus, plan and shell mode) is now periwinkle instead of cyan in both the dark and light themes, and the xhigh effort color moves to a pinker violet so it stays distinct from plan mode.
diff --git a/apps/pythinker-code/src/tui/theme/colors.ts b/apps/pythinker-code/src/tui/theme/colors.ts
index 02b9dc128..4772c172e 100644
--- a/apps/pythinker-code/src/tui/theme/colors.ts
+++ b/apps/pythinker-code/src/tui/theme/colors.ts
@@ -211,7 +211,7 @@ export const darkColors: ColorPalette = {
   effortLow: '#B3B3B3',
   effortMedium: '#E8E8E8',
   effortHigh: '#6FA8DC',
-  effortXHigh: '#A78BFA',
+  effortXHigh: '#D58BF0',
   effortMax: '#F2C744',
 
   diffAdded: '#4EC87E',
@@ -290,7 +290,7 @@ export const lightColors: ColorPalette = {
   effortLow: '#8C8C8C',
   effortMedium: '#404040',
   effortHigh: '#2E6FB8',
-  effortXHigh: '#7048B6',
+  effortXHigh: '#8E3AA8',
   effortMax: '#B8860B',
 
   diffAdded: '#0E7A38',
diff --git a/docs/customization/themes.md b/docs/customization/themes.md
index 9814cdaf3..fd7cdbd78 100644
--- a/docs/customization/themes.md
+++ b/docs/customization/themes.md
@@ -30,7 +30,7 @@ Active `/model` provider and `AskUserQuestion` tabs use `selectionBg` for the ba
 | `effortLow` | `#B3B3B3` | `#8C8C8C` | Low thinking effort; colors the prompt-area border. |
 | `effortMedium` | `#E8E8E8` | `#404040` | Medium thinking effort; colors the prompt-area border. |
 | `effortHigh` | `#6FA8DC` | `#2E6FB8` | High thinking effort; colors the prompt-area border. |
-| `effortXHigh` | `#A78BFA` | `#7048B6` | Extra-high thinking effort; colors the prompt-area border. |
+| `effortXHigh` | `#D58BF0` | `#8E3AA8` | Extra-high thinking effort; colors the prompt-area border. |
 | `effortMax` | `#F2C744` | `#B8860B` | Maximum thinking effort; colors the editor effort dot. |
 | `diffAdded` | `#4EC87E` | `#0E7A38` | Added lines. |
 | `diffRemoved` | `#E85454` | `#B91C1C` | Removed lines. |