fix(themes): anchor theme colors are scoped to _md components

Author: ThomasBurleson

docs/config/template/index.template.html

@@ -159,9 +159,9 @@ <h2 class="md-toolbar-item md-breadcrumb md-headline">
       <div layout="row" flex="noshrink" layout-align="center center">
         <div id="license-footer" flex>
           Powered by Google &copy;2014&#8211;{{thisYear}}.
-          Code licensed under the <a href="./license"  >MIT License</a>.
+          Code licensed under the <a href="./license"  class="md-accent">MIT License</a>.
           Documentation licensed under
-          <a href="http://creativecommons.org/licenses/by/4.0/"  target="_blank">CC BY 4.0</a>.
+          <a href="http://creativecommons.org/licenses/by/4.0/"  target="_blank" class="md-default-theme md-accent">CC BY 4.0</a>.
         </div>
       </div>
     </md-content>

src/components/button/button-theme.scss

@@ -156,8 +156,8 @@
   }
 }
 
-a.md-THEME_NAME-theme:not(.md-button),
-._md a:not(.md-button) {
+
+._md a.md-THEME_NAME-theme:not(.md-button) {
   &.md-primary {
     color: '{{primary-color}}';