Use a fresher primary header color

flaskbb/themes/aurora/src/flaskbb.scss

@@ -15,7 +15,7 @@ $border-color: #cad7e1;
 // header colors
 $header-title-font-color: #fff;
 $header-subtitle-font-color: #E8F1F2;
-$header-background-primary: #3276b1;
+$header-background-primary: #0088cc;  // old: #3276b1
 $header-background-secondary: #285e8e;
 
 // navigation

flaskbb/themes/aurora/static/css/flaskbb.css

@@ -21,9 +21,9 @@ body {
   color: #fff;
   text-align: left;
   text-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
-  background-color: #3276b1;
-  background-image: -webkit-linear-gradient(top, #285e8e 0%, #3276b1 100%);
-  background-image: linear-gradient(to bottom, #285e8e 0%, #3276b1 100%);
+  background-color: #0088cc;
+  background-image: -webkit-linear-gradient(top, #285e8e 0%, #0088cc 100%);
+  background-image: linear-gradient(to bottom, #285e8e 0%, #0088cc 100%);
   background-repeat: repeat-x;
   filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='$header-background-secondary', endColorstr='$header-background-primary', GradientType=0);
   border: 1px solid #cad7e1;