Adjust colors

Author: JHWelch

src/ui/css/diff2html.css

@@ -44,8 +44,8 @@
    * Dark Color Scheme
    */
 
-  --d2h-dark-color: #d0d0d0;
-  --d2h-dark-bg-color: #272822;
+  --d2h-dark-color: #e6edf3;
+  --d2h-dark-bg-color: #171814;
   --d2h-dark-border-color: #494b40;
 
   --d2h-dark-dim-color: #929292;