diff --git a/kallithea/public/css/style.css b/kallithea/public/css/style.css
--- a/kallithea/public/css/style.css
+++ b/kallithea/public/css/style.css
@@ -3191,7 +3191,7 @@ input[disabled].btn,
     box-shadow: none !important;
 }
 
-.btn.red {
+.btn.btn-danger {
     color: #fff;
     background-color: #c43c35;
     background-repeat: repeat-x;
@@ -3200,8 +3200,7 @@ input[disabled].btn,
     border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-
-.btn.blue {
+.btn.btn-primary {
     color: #fff;
     background-color: #339bb9;
     background-repeat: repeat-x;
@@ -3210,7 +3209,7 @@ input[disabled].btn,
     border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-.btn.green {
+.btn.btn-success {
     color: #fff;
     background-color: #57a957;
     background-repeat: repeat-x;
@@ -3219,7 +3218,7 @@ input[disabled].btn,
     border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
 }
 
-.btn.yellow {
+.btn.btn-warning {
     color: #fff;
     background-color: #faa732;
     background-repeat: repeat-x;
diff --git a/kallithea/templates/admin/repo_groups/repo_group_edit_settings.html b/kallithea/templates/admin/repo_groups/repo_group_edit_settings.html
--- a/kallithea/templates/admin/repo_groups/repo_group_edit_settings.html
+++ b/kallithea/templates/admin/repo_groups/repo_group_edit_settings.html
@@ -50,7 +50,7 @@ ${h.form(url('delete_repo_group', group_
 <div class="form">
     <div class="form-horizontal">
         <div class="buttons">
-            ${h.submit('remove_%s' % c.repo_group.group_name,_('Remove this group'),class_="btn red",onclick="return confirm('"+_('Confirm to delete this group')+"');")}
+            ${h.submit('remove_%s' % c.repo_group.group_name,_('Remove this group'),class_="btn btn-danger",onclick="return confirm('"+_('Confirm to delete this group')+"');")}
         </div>
     </div>
 </div>
diff --git a/kallithea/templates/search/search.html b/kallithea/templates/search/search.html
--- a/kallithea/templates/search/search.html
+++ b/kallithea/templates/search/search.html
@@ -51,7 +51,7 @@ ${self.repo_context_bar('options')}
              </div>
                 <div class="input">${h.text('q',c.cur_query,class_="small")}
                     <div class="button highlight">
-                        <input type="submit" value="${_('Search')}" class="btn"/>
+                        <input type="submit" value="${_('Search')}" class="btn btn-default"/>
                     </div>
                 </div>
                 <div style="font-weight: bold;clear:both;margin-left:200px">${c.runtime}</div>