github: Set border-color for *

I think it's easier to set it for everything and override on the few
items that need a brighter border.

css/solarized-all-sites-dark.css

@@ -31,6 +31,9 @@ pre {
   background-color: #002b36 !important;
   color: #839496 !important;
 }
+* {
+  border-color: #073642 !important;
+}
 .news .alert .pull-info {
   background-color: #083c4a !important;
 }

css/solarized-all-sites-light.css

@@ -31,6 +31,9 @@ pre {
   background-color: #fdf6e3 !important;
   color: #657b83 !important;
 }
+* {
+  border-color: #eee8d5 !important;
+}
 .news .alert .pull-info {
   background-color: #ebe4cf !important;
 }

css/solarized-github-dark.css

@@ -24,6 +24,9 @@ pre {
   background-color: #073642 !important;
   color: #839496 !important;
 }
+* {
+  border-color: #073642 !important;
+}
 .news .alert .pull-info {
   background-color: #083c4a !important;
 }

css/solarized-github-light.css

@@ -24,6 +24,9 @@ pre {
   background-color: #eee8d5 !important;
   color: #657b83 !important;
 }
+* {
+  border-color: #eee8d5 !important;
+}
 .news .alert .pull-info {
   background-color: #ebe4cf !important;
 }

sites/github.styl

@@ -1,5 +1,10 @@
 // * github.styl
 
+// ** Global elements
+
+*
+    border-color color-background-highlight
+
 // ** Front page
 
 .news .alert .pull-info