updated dark theme to use external color definition

css/theme/solarized_dark.css

@@ -11,8 +11,7 @@
   font-style: normal; }
 
 /**
- * Primary styles (custom section, non htmlboilerplate)
- * Author: Ethan Schoonover
+ * Solarized colors by Ethan Schoonover
  */
 html * {
   color-profile: sRGB;

css/theme/source/solarized_dark.scss

@@ -26,34 +26,15 @@
 
 @import url(http://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
 
-
 /**
- * Primary styles (custom section, non htmlboilerplate)
- * Author: Ethan Schoonover
+ * Solarized colors by Ethan Schoonover
  */
-
 html * {
 	color-profile: sRGB;
 	rendering-intent: auto;
 }
 
-$base03:    #002b36;
-$base02:    #073642;
-$base01:    #586e75;
-$base00:    #657b83;
-$base0:     #839496;
-$base1:     #93a1a1;
-$base2:     #eee8d5;
-$base3:     #fdf6e3;
-$yellow:    #b58900;
-$orange:    #cb4b16;
-$red:       #dc322f;
-$magenta:   #d33682;
-$violet:    #6c71c4;
-$blue:      #268bd2;
-$cyan:      #2aa198;
-$green:     #859900;
-
+@import "solarized_colors.scss";
 
 // Override theme settings (see ../template/settings.scss)
 $mainColor: $base0;