diff --git a/core/language/en-GB/Docs/PaletteColours.multids b/core/language/en-GB/Docs/PaletteColours.multids
index 1c671a67c..bc1b36c3d 100644
--- a/core/language/en-GB/Docs/PaletteColours.multids
+++ b/core/language/en-GB/Docs/PaletteColours.multids
@@ -65,6 +65,10 @@ sidebar-tab-foreground-selected: Sidebar tab foreground for selected tabs
 sidebar-tab-foreground: Sidebar tab foreground
 sidebar-tiddler-link-foreground-hover: Sidebar tiddler link foreground hover
 sidebar-tiddler-link-foreground: Sidebar tiddler link foreground
+stability-stable: Badge for stability level "stable"
+stability-experimental: Badge for stability level "experimental"
+stability-deprecated: Badge for stability level "deprecated"
+stability-legacy: Badge for stability level "legacy"
 testcase-accent-level-1: Test case accent colour with no nesting
 testcase-accent-level-2: Test case accent colour with 2nd level nesting
 testcase-accent-level-3: Test case accent colour with 3rd level nesting or higher
diff --git a/core/palettes/Vanilla.tid b/core/palettes/Vanilla.tid
index c7c800046..d2b765b02 100644
--- a/core/palettes/Vanilla.tid
+++ b/core/palettes/Vanilla.tid
@@ -82,6 +82,10 @@ sidebar-tab-foreground: <<colour tab-foreground>>
 sidebar-tiddler-link-foreground-hover: #444444
 sidebar-tiddler-link-foreground: #999999
 site-title-foreground: <<colour tiddler-title-foreground>>
+stability-stable: #008000
+stability-experimental: #c07c00
+stability-deprecated: #ff0000
+stability-legacy: #0000ff
 static-alert-foreground: #aaaaaa
 tab-background-selected: #ffffff
 tab-background: #d8d8d8
diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index bb658650a..71c5f9361 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -2601,22 +2601,22 @@ a.tc-tiddlylink.tc-plugin-info:hover > .tc-plugin-info-chunk > svg {
 }
 
 .tc-plugin-info-chunk .tc-plugin-info-stability-stable {
-	border: 1px solid green;
+	border: 1px solid <<colour stability-stable>>;
 	color: green;
 }
 
 .tc-plugin-info-chunk .tc-plugin-info-stability-experimental {
-	border: 1px solid #c07c00;
+	border: 1px solid <<colour stability-experimental>>;
 	color: #c07c00;
 }
 
 .tc-plugin-info-chunk .tc-plugin-info-stability-deprecated {
-	border: 1px solid red;
+	border: 1px solid <<colour stability-deprecated>>;
 	color: red;
 }
 
 .tc-plugin-info-chunk .tc-plugin-info-stability-legacy {
-	border: 1px solid blue;
+	border: 1px solid <<colour stability-legacy>>;
 	color: blue;
 }