Make code block color match Wyrm code block color

This fixes #203. As of Sphinx 1.3, there are some code blocks that shouldn't
have this styling: namely breadcrumb code blocks and xref code blocks. This adds
additional rules for those as well.

sass/_theme_breadcrumbs.sass

@@ -7,6 +7,12 @@
     padding: 5px
     &:first-child
       padding-left: 0
+  code
+    padding: 5px
+    border: none
+    background: none
+    &.literal
+      color: $text-color
 .wy-breadcrumbs-extra
   margin-bottom: 0
   color: $text-light

sass/_theme_rst.sass

@@ -195,8 +195,11 @@
       font-size: 100% !important
       line-height: normal
 
-    .xref, a &
+    &.literal
+      color: $text-code-color
+    &.xref, a &
       font-weight: bold
+      color: $text-color
   // If the literal is inside an a tag, let's color it like a link
   a tt, a code
     color: $link-color