change color for publish on swarm

src/app/tabs/compile-tab.js

@@ -195,7 +195,7 @@ class CompileTab extends CompilerApi {
       </div>
         
       <article class="${css.compilerArticle}">
-        <button class="btn btn-primary btn-block" title="Publish on Swarm" onclick="${() => { this.publish() }}">
+        <button class="btn btn-secondary btn-block" title="Publish on Swarm" onclick="${() => { this.publish() }}">
           <i class="${css.copyIcon} fas fa-upload" aria-hidden="true"></i>
           <span>Publish on Swarm</span>
         </button>