Set variables from within theme file

theme/blue/theme.json

@@ -1,4 +1,9 @@
 {
+    "newswire-publish-icon": True,
+    "full-width-timeline-buttons": False,
+    "icons-as-buttons": False,
+    "rss-icon-at-top": True,
+    "publish-button-at-top": False,
     "banner-height": "20vh",
     "banner-height-mobile": "10vh",
     "newswire-date-color": "blue",