Add skin appopriate colors for code blocks

Author: mmistakes

_sass/basically-basic/themes/_soft.scss

@@ -10,3 +10,21 @@ $background-color: #fefaec !default;
 $code-background-color: #fff !default;
 $border-color: rgba($text-color, 0.5) !default;
 $overlay-color: #fff !default;
+
+/* Syntax highlighting (base16) colors */
+$base00: #efecf4 !default;
+$base01: #e2dfe7 !default;
+$base02: #8b8792 !default;
+$base03: #7e7887 !default;
+$base04: #655f6d !default;
+$base05: #585260 !default;
+$base06: #26232a !default;
+$base07: #19171c !default;
+$base08: #be4678 !default;
+$base09: #aa573c !default;
+$base0a: #a06e3b !default;
+$base0b: #2a9292 !default;
+$base0c: #398bc6 !default;
+$base0d: #576ddb !default;
+$base0e: #955ae7 !default;
+$base0f: #bf40bf !default;

_sass/basically-basic/themes/_steel.scss

@@ -10,3 +10,21 @@ $background-color: #eee !default;
 $code-background-color: #fff !default;
 $border-color: rgba($text-color, 0.25) !default;
 $overlay-color: #fff !default;
+
+/* Syntax highlighting (base16) colors */
+$base00: #1d1f21 !default;
+$base01: #282a2e !default;
+$base02: #373b41 !default;
+$base03: #969896 !default;
+$base04: #b4b7b4 !default;
+$base05: #c5c8c6 !default;
+$base06: #e0e0e0 !default;
+$base07: #ffffff !default;
+$base08: #cc6666 !default;
+$base09: #de935f !default;
+$base0a: #f0c674 !default;
+$base0b: #b5bd68 !default;
+$base0c: #8abeb7 !default;
+$base0d: #81a2be !default;
+$base0e: #b294bb !default;
+$base0f: #a3685a !default;