diff --git a/website/_harp.json b/website/_harp.json
index bf31be30c..b75e2fd3b 100644
--- a/website/_harp.json
+++ b/website/_harp.json
@@ -80,6 +80,7 @@
             }
         ],
 
+        "ALPHA": true,
         "V_CSS": "1.6",
         "V_JS": "1.2",
         "DEFAULT_SYNTAX": "python",
diff --git a/website/_includes/_navigation.jade b/website/_includes/_navigation.jade
index d319ef2c9..320882807 100644
--- a/website/_includes/_navigation.jade
+++ b/website/_includes/_navigation.jade
@@ -9,6 +9,9 @@ nav.c-nav.u-text.js-nav(class=landing ? "c-nav--theme" : null)
         .u-text-label.u-padding-small.u-hidden-xs=SUBSECTION
 
     ul.c-nav__menu
+        if ALPHA
+            - var NAVIGATION = { "Usage": "/docs/usage", "Reference": "/docs/api" }
+
         each url, item in NAVIGATION
             li.c-nav__menu__item(class=(url == "/") ? "u-hidden-xs" : null)
                 +a(url)=item
diff --git a/website/_includes/_page-docs.jade b/website/_includes/_page-docs.jade
index 72db134cd..ec2751c4d 100644
--- a/website/_includes/_page-docs.jade
+++ b/website/_includes/_page-docs.jade
@@ -10,6 +10,14 @@ main.o-main.o-main--sidebar.o-main--aside
             if tag
                 +tag=tag
 
+        if ALPHA
+            +infobox("⚠️ You are viewing the spaCy v2.0 alpha docs")
+                |  This page is part of the alpha documentation for spaCy v2.0
+                |  and does not reflect the state of the latest stable release.
+                |  #[+a("#") See here] for more information on how to install
+                |  and test the new version. To read the official docs for
+                |  v1.x, #[+a("https://spacy.io/docs") go here].
+
         !=yield
 
     +grid.o-content.u-text
diff --git a/website/_layout.jade b/website/_layout.jade
index ccca2863f..f0828fb33 100644
--- a/website/_layout.jade
+++ b/website/_layout.jade
@@ -35,7 +35,10 @@ html(lang="en")
     link(rel="shortcut icon" href="/assets/img/favicon.ico")
     link(rel="icon" type="image/x-icon" href="/assets/img/favicon.ico")
 
-    if SUBSECTION == "usage"
+    if ALPHA && SECTION == "docs"
+        link(href="/assets/css/style_green.css?v#{V_CSS}" rel="stylesheet")
+
+    else if SUBSECTION == "usage"
         link(href="/assets/css/style_red.css?v#{V_CSS}" rel="stylesheet")
 
     else