Fixing header color for success, error and info alerts

docs/assets/css/bootstrap.css

@@ -3838,6 +3838,10 @@ input[type="submit"].btn.btn-mini {
   border-color: #d6e9c6;
 }
 
+.alert-success h4 {
+  color: #468847;
+}
+
 .alert-danger,
 .alert-error {
   color: #b94a48;
@@ -3845,12 +3849,21 @@ input[type="submit"].btn.btn-mini {
   border-color: #eed3d7;
 }
 
+.alert-danger h4,
+.alert-error h4 {
+  color: #b94a48;
+}
+
 .alert-info {
   color: #3a87ad;
   background-color: #d9edf7;
   border-color: #bce8f1;
 }
 
+.alert-info h4 {
+  color: #3a87ad;
+}
+
 .alert-block {
   padding-top: 14px;
   padding-bottom: 14px;

less/alerts.less

@@ -40,17 +40,30 @@
   border-color: @successBorder;
   color: @successText;
 }
+.alert-success h4 {
+  // Specified for the h4 to prevent conflicts of changing @headingsColor
+  color: @successText;
+}
 .alert-danger,
 .alert-error {
   background-color: @errorBackground;
   border-color: @errorBorder;
   color: @errorText;
 }
+.alert-danger h4,
+.alert-error h4 {
+  // Specified for the h4 to prevent conflicts of changing @headingsColor
+  color: @errorText;
+}
 .alert-info {
   background-color: @infoBackground;
   border-color: @infoBorder;
   color: @infoText;
 }
+.alert-info h4 {
+  // Specified for the h4 to prevent conflicts of changing @headingsColor
+  color: @infoText;
+}
 
 
 // Block alerts