diff --git a/mercurial/templates/gitweb/map b/mercurial/templates/gitweb/map
--- a/mercurial/templates/gitweb/map
+++ b/mercurial/templates/gitweb/map
@@ -105,9 +105,9 @@ annotateline = '
     <td><pre><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a></pre></td>
     <td><pre>{line|escape}</pre></td>
   </tr>'
-difflineplus = '<span style="color:#008800;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
-difflineminus = '<span style="color:#cc0000;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
-difflineat = '<span style="color:#990099;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineplus = '<span class="difflineplus"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineminus = '<span class="difflineminus"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineat = '<span class="difflineat"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
 diffline = '<a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}'
 
 comparisonblock ='
diff --git a/mercurial/templates/monoblue/map b/mercurial/templates/monoblue/map
--- a/mercurial/templates/monoblue/map
+++ b/mercurial/templates/monoblue/map
@@ -100,9 +100,9 @@ annotateline = '
     </td>
     <td class="source">{line|escape}</td>
   </tr>'
-difflineplus = '<span style="color:#008800;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
-difflineminus = '<span style="color:#cc0000;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
-difflineat = '<span style="color:#990099;"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineplus = '<span class="difflineplus"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineminus = '<span class="difflineminus"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
+difflineat = '<span class="difflineat"><a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}</span>'
 diffline = '<a class="linenr" href="#{lineid}" id="{lineid}">{linenumber}</a> {line|escape}'
 
 comparisonblock ='
diff --git a/mercurial/templates/static/style-gitweb.css b/mercurial/templates/static/style-gitweb.css
--- a/mercurial/templates/static/style-gitweb.css
+++ b/mercurial/templates/static/style-gitweb.css
@@ -84,6 +84,9 @@ span.logtags span.bookmarktag {
 	background-color: #afdffa;
 	border-color: #ccecff #46ace6 #46ace6 #ccecff;
 }
+span.difflineplus { color:#008800; }
+span.difflineminus { color:#cc0000; }
+span.difflineat { color:#990099; }
 
 /* Graph */
 div#wrapper {
diff --git a/mercurial/templates/static/style-monoblue.css b/mercurial/templates/static/style-monoblue.css
--- a/mercurial/templates/static/style-monoblue.css
+++ b/mercurial/templates/static/style-monoblue.css
@@ -260,6 +260,10 @@ div.diff pre span {
   font-size: 1.2em;
   padding: 3px 0;
 }
+span.difflineplus { color:#008800; }
+span.difflineminus { color:#cc0000; }
+span.difflineat { color:#990099; }
+
 td.source {
   white-space: pre;
   font-family: monospace;
diff --git a/tests/test-hgweb.t b/tests/test-hgweb.t
--- a/tests/test-hgweb.t
+++ b/tests/test-hgweb.t
@@ -332,7 +332,7 @@ static file
 
   $ "$TESTDIR/get-with-headers.py" --twice localhost:$HGPORT 'static/style-gitweb.css' - date etag server
   200 Script output follows
-  content-length: 5262
+  content-length: 5372
   content-type: text/css
   
   body { font-family: sans-serif; font-size: 12px; border:solid #d9d8d1; border-width:1px; margin:10px; }
@@ -421,6 +421,9 @@ static file
   	background-color: #afdffa;
   	border-color: #ccecff #46ace6 #46ace6 #ccecff;
   }
+  span.difflineplus { color:#008800; }
+  span.difflineminus { color:#cc0000; }
+  span.difflineat { color:#990099; }
   
   /* Graph */
   div#wrapper {