diff --git a/docs/API.md b/docs/API.md
index a48cb8ea..74a9c723 100644
--- a/docs/API.md
+++ b/docs/API.md
@@ -21,6 +21,7 @@ with the following top-level properties:
 | `canChat` | bool | Optional | `true` | Whether the user can be offered chat or not. |
 | `layout` | string | Optional | `max-width-fixed-height` | The chat layout `max-width-fixed-height`\|`max-parent-size`\|`panel-fixed-size`\|`panel-max-parent-size` |
 | `nodeId` | string | Mandatory | `null` | The id of the HTMLNode where Happychat will be rendered. |
+| `theme` | string | Optional | `calypso` | Color theme. Valid values are `calypso`, `woo`, and `woo`
 
 ### The entry prop
 
diff --git a/docs/HACKING.md b/docs/HACKING.md
index 33e518d6..b2e78648 100644
--- a/docs/HACKING.md
+++ b/docs/HACKING.md
@@ -46,11 +46,11 @@ Upon the iframe creation a spinner line is shown right away within the iframe -a
 
 We've transitioned to a codebase that supports themes by consolidating the colors used and using CSS Custom Properties. At the time of writing we support 3 themes, that may be found at `src/ui/css/themes`:
 
-- `main`: follows the [WordPress.com guidelines](https://wordpress.com/design-handbook/colors/). It's the default theme.
+- `calypso`: follows the [WordPress.com guidelines](https://wordpress.com/design-handbook/colors/). It's the default theme.
 - `jpop`: follows the Jetpack guidelines.
 - `woo`: follows the [WooCommerce guidelines](https://woocommerce.com/style-guide/#sg-palette).
 
-All SCSS color variables are declared at `/home/andres/src/happychat-client/src/ui/css/shared/_colors.scss`. The themes are automatically selected depending on the the chat group the user is routed to. For example, the `woo` theme will be activated when group is `woo`, and `jpop` when group is `jpop`.
+All SCSS color variables are declared at `/home/andres/src/happychat-client/src/ui/css/shared/_colors.scss`. The themes are  selected based on the `theme` parameter sent, the default theme is `calypso`
 
 Note that CSS Custom Properties support is yet not [ubiquitous](https://caniuse.com/#feat=css-variables) -current offenders are IE11 and Opera Mini- so we use [postcss-custom-properties](https://github.com/postcss/postcss-custom-properties) processors to compile back for those browsers.
 
diff --git a/package.json b/package.json
index 4e6b0624..8ed8b2cf 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "dev:standalone:js": "NODE_ENV=development webpack-dev-server --config webpack.standalone.config.js",
     "dev:standalone:css": "run-p dev:standalone:css:*",
     "dev:standalone:css:main": "node-sass src/form.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/happychat.css",
+    "dev:standalone:css:calypso": "node-sass src/ui/css/themes/_calypso.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/calypso.css",
     "dev:standalone:css:woo": "node-sass src/ui/css/themes/_woo.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/woo.css",
     "dev:standalone:css:jpop": "node-sass src/ui/css/themes/_jpop.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/jpop.css",
 
@@ -29,6 +30,7 @@
     "dev:npm:js": "NODE_ENV=development ./node_modules/babel-cli/bin/babel.js --watch src --out-dir targets/npm",
     "dev:npm:css": "run-p dev:npm:css:*",
     "dev:npm:css:main": "node-sass src/form.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/happychat.css",
+    "dev:npm:css:calypso": "node-sass src/ui/css/themes/_calypso.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/calypso.css",
     "dev:npm:css:woo": "node-sass src/ui/css/themes/_woo.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/woo.css",
     "dev:npm:css:jpop": "node-sass src/ui/css/themes/_jpop.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/jpop.css",
     "dev:npm:css:serve": "NODE_ENV=development webpack-dev-server --config webpack.npm.config.js",
@@ -37,6 +39,7 @@
     "dev:wordpress:js": "NODE_ENV=development webpack-dev-server --config webpack.wordpress.config.js",
     "dev:wordpress:css": "run-p dev:wordpress:css:*",
     "dev:wordpress:css:main": "node-sass src/form.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/happychat.css",
+    "dev:wordpress:css:calypso": "node-sass src/ui/css/themes/_calypso.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/calypso.css",
     "dev:wordpress:css:woo": "node-sass src/ui/css/themes/_woo.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/woo.css",
     "dev:wordpress:css:jpop": "node-sass src/ui/css/themes/_jpop.scss | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/jpop.css",
 
@@ -45,6 +48,7 @@
     "build:standalone:js": "NODE_ENV=production webpack -p --config webpack.standalone.config.js -p",
     "build:standalone:css": "run-p build:standalone:css:*",
     "build:standalone:css:main": "node-sass src/form.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/happychat.css",
+    "build:standalone:css:calypso": "node-sass src/ui/css/themes/_calypso.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/calypso.css",
     "build:standalone:css:woo": "node-sass src/ui/css/themes/_woo.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/woo.css",
     "build:standalone:css:jpop": "node-sass src/ui/css/themes/_jpop.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/standalone/jpop.css",
 
@@ -52,6 +56,7 @@
     "build:npm:js": "NODE_ENV=production ./node_modules/babel-cli/bin/babel.js src --out-dir targets/npm",
     "build:npm:css": "run-p build:npm:css:*",
     "build:npm:css:main": "node-sass src/form.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/happychat.css",
+    "build:npm:css:calypso": "node-sass src/ui/css/themes/_calypso.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/calypso.css",
     "build:npm:css:woo": "node-sass src/ui/css/themes/_woo.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/woo.css",
     "build:npm:css:jpop": "node-sass src/ui/css/themes/_jpop.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/npm/jpop.css",
 
@@ -59,6 +64,7 @@
     "build:wordpress:js": "NODE_ENV=production webpack -p --config webpack.wordpress.config.js",
     "build:wordpress:css": "run-p build:wordpress:css:*",
     "build:wordpress:css:main": "node-sass src/form.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/assets/happychat.css",
+    "build:wordpress:css:calypso": "node-sass src/ui/css/themes/_calypso.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/assets/calypso.css",
     "build:wordpress:css:woo": "node-sass src/ui/css/themes/_woo.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/assets/woo.css",
     "build:wordpress:css:jpop": "node-sass src/ui/css/themes/_jpop.scss --output-style compressed | postcss --config postcss.config.json -u autoprefixer -u postcss-custom-properties --no-map -o targets/wordpress/assets/jpop.css",
     "test": "jest -c jest.config.json"
diff --git a/src/api.js b/src/api.js
index 7870ebfa..a0c93629 100644
--- a/src/api.js
+++ b/src/api.js
@@ -15,7 +15,7 @@ import {
 	renderError,
  } from './index';
 import authenticator from 'src/lib/auth';
-import { LAYOUT_MAX_WIDTH_FIXED_HEIGHT } from './constants';
+import { LAYOUT_MAX_WIDTH_FIXED_HEIGHT, THEME_CALYPSO } from './constants';
 
 const api = {
 	/**
@@ -35,6 +35,7 @@ const api = {
 	 * @param {String} layout Optional. The chat layout max-width-fixed-height | max-parent-size | panel-fixed-size | panel-max-parent-size
 	 * @param {string} nodeId Mandatory. HTML Node id where Happychat will be rendered.
 	 * @param {Object} user Optional. Customer information .
+	 * @param {string} theme Optional. Selected color theme.
 	 */
 	open: ( {
 		authentication,
@@ -45,10 +46,11 @@ const api = {
 		layout = LAYOUT_MAX_WIDTH_FIXED_HEIGHT,
 		nodeId,
 		user,
+		theme = THEME_CALYPSO,
 	} ) => {
 		authenticator.init( authentication );
 
-		const targetNode = createTargetNode( { entryOptions, groups, layout, nodeId } );
+		const targetNode = createTargetNode( { entryOptions, groups, layout, nodeId, theme } );
 
 		authenticator.login()
 			.then( () => isEmpty( user ) ? authenticator.getUser() : Promise.resolve( user ) )
diff --git a/src/constants.js b/src/constants.js
index fe82eea1..5d097abd 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -8,6 +8,11 @@ export const LAYOUT_MAX_PARENT_SIZE = 'max-parent-size';
 export const LAYOUT_PANEL_FIXED_SIZE = 'panel-fixed-size';
 export const LAYOUT_PANEL_MAX_PARENT_SIZE = 'panel-max-parent-size';
 
+// Themes
+export const THEME_CALYPSO = 'calypso';
+export const THEME_WOO = 'woo';
+export const THEME_JPOP = 'jpop';
+
 // Entry
 export const ENTRY_CHAT = 'chat';
 export const ENTRY_FORM = 'form';
diff --git a/src/form.scss b/src/form.scss
index 82dfe033..6a7ba668 100644
--- a/src/form.scss
+++ b/src/form.scss
@@ -15,7 +15,6 @@
 @import 'ui/css/shared/mixins/noticon';
 @import 'ui/css/shared/animation';
 @import 'ui/css/shared/classes';
-@import 'ui/css/themes/main';
 
 // General styles
 @import 'ui/css/shared/vendor/noticon'; // .noticon
diff --git a/src/index.js b/src/index.js
index b2b5ab2a..59d53203 100644
--- a/src/index.js
+++ b/src/index.js
@@ -34,6 +34,7 @@ import {
 	LAYOUT_MAX_PARENT_SIZE,
 	LAYOUT_PANEL_FIXED_SIZE,
 	LAYOUT_PANEL_MAX_PARENT_SIZE,
+	THEME_CALYPSO,
 } from 'src/constants';
 
 const store = createStore(
@@ -55,26 +56,26 @@ const dispatchAssetsFinishedDownloading = () => store.dispatch( setAssetsLoaded(
  * @returns {HTMLNode} Target node where Happychat can hook into.
  */
 const createIframe = ( props, assetsLoadedHook = () => {} ) => {
-	const { entryOptions, groups, layout, nodeId } = props;
+	const { entryOptions, groups, layout, nodeId, theme } = props;
 	const iframeElement = document.createElement( 'iframe' );
 
 	let iframeHeight = 0;
 	let iframeWidth = 0;
 	switch ( layout ) {
 		case LAYOUT_MAX_WIDTH_FIXED_HEIGHT:
-	const primaryHasAnySecondary = options =>
-		Array.isArray( options ) && find( options, opt => opt.secondaryOptions );
+			const primaryHasAnySecondary = options =>
+			Array.isArray( options ) && find( options, opt => opt.secondaryOptions );
 
-	const isThereAnySecondaryOptions = options =>
-		options &&
-		( options.secondaryOptions || primaryHasAnySecondary( entryOptions.primaryOptions ) );
+			const isThereAnySecondaryOptions = options =>
+				options &&
+				( options.secondaryOptions || primaryHasAnySecondary( entryOptions.primaryOptions ) );
 
-	// Calculate height based on the number of components
-	// the iframe may need to render.
+			// Calculate height based on the number of components
+			// the iframe may need to render.
 			iframeHeight = 480;
-	iframeHeight = iframeHeight + ( entryOptions && entryOptions.primaryOptions ? 110 : 0 );
-	iframeHeight = iframeHeight + ( isThereAnySecondaryOptions( entryOptions ) ? 110 : 0 );
-	iframeHeight = iframeHeight + ( entryOptions && entryOptions.itemList ? 70 : 0 );
+			iframeHeight = iframeHeight + ( entryOptions && entryOptions.primaryOptions ? 110 : 0 );
+			iframeHeight = iframeHeight + ( isThereAnySecondaryOptions( entryOptions ) ? 110 : 0 );
+			iframeHeight = iframeHeight + ( entryOptions && entryOptions.itemList ? 70 : 0 );
 
 			iframeHeight = iframeHeight + 'em';
 			iframeWidth = '100%';
@@ -157,20 +158,17 @@ const createIframe = ( props, assetsLoadedHook = () => {} ) => {
 	styleHC.setAttribute( 'type', 'text/css' );
 	styleHC.setAttribute( 'href', config( 'css_url' ) );
 
-	// TODO: rework this to use skills and have local themes loaded
 	const styleHCPromise = new Promise( resolve => ( styleHC.onload = () => resolve() ) );
 
 	const styleHCTheme = document.createElement( 'link' );
 	styleHCTheme.setAttribute( 'rel', 'stylesheet' );
 	styleHCTheme.setAttribute( 'type', 'text/css' );
 	let styleHCThemePromise = Promise.resolve();
-	if ( groups && groups.length > 0 ) {
-		const groupName = groups[ 0 ];
-		if ( groupName === 'woo' || groupName === 'jpop' ) {
-			styleHCTheme.setAttribute( 'href', 'https://widgets.wp.com/happychat/' + groupName + '.css' );
-			styleHCThemePromise = new Promise( resolve => ( styleHCTheme.onload = () => resolve() ) );
-		}
-	}
+
+	// if we are not using the default theme load the requested one
+	// TODO: cleanup the css url to use base url
+	styleHCTheme.setAttribute( 'href', config( 'css_url' ).replace( 'happychat.css', theme + '.css' ) );
+	styleHCThemePromise = new Promise( resolve => ( styleHCTheme.onload = () => resolve() ) );
 
 	Promise.all( [ styleNoticonPromise, styleHCPromise, styleHCThemePromise ] ).then( () =>
 		assetsLoadedHook()
@@ -222,12 +220,14 @@ export const renderHappychat = (
 			username,
 			display_name,
 			avatar_URL,
+			language,
 			localeSlug,
 		},
 		groups = [ HAPPYCHAT_GROUP_WPCOM ],
 		canChat = true,
 		entry = ENTRY_FORM,
 		entryOptions = {},
+		layout,
 	}
 ) => {
 	const { fallbackTicket } = entryOptions;
@@ -241,7 +241,8 @@ export const renderHappychat = (
 		} )
 	);
 	store.dispatch( setGroups( groups ) );
-	store.dispatch( setLocale( localeSlug ) );
+	// TODO: fix this - currentUser object differs from calypso to oauth.
+	store.dispatch( setLocale( language | localeSlug ) );
 	store.dispatch( setFallbackTicketOptions( fallbackTicket ) );
 
 	isAnyCanChatPropFalse( canChat, entryOptions )
@@ -250,7 +251,7 @@ export const renderHappychat = (
 
 	ReactDOM.render(
 		<Provider store={ store }>
-			<Happychat entry={ entry } entryOptions={ entryOptions } />
+			<Happychat entry={ entry } entryOptions={ entryOptions } layout={ layout } />
 		</Provider>,
 		targetNode
 	);
diff --git a/src/ui/css/_main.scss b/src/ui/css/_main.scss
index 8bcddfc8..43f4ae96 100644
--- a/src/ui/css/_main.scss
+++ b/src/ui/css/_main.scss
@@ -10,6 +10,7 @@ body {
 	font-size: 15px;
 	line-height: 1.5;
 	color: var(--neutral-dark);
+	background: var(--neutral-lighten-30);
 	margin: 1; // separate from iframe, so children can style the borders
 }
 
diff --git a/src/ui/css/themes/_main.scss b/src/ui/css/themes/_calypso.scss
similarity index 92%
rename from src/ui/css/themes/_main.scss
rename to src/ui/css/themes/_calypso.scss
index 65cbf88f..06bbe387 100644
--- a/src/ui/css/themes/_main.scss
+++ b/src/ui/css/themes/_calypso.scss
@@ -1,5 +1,8 @@
 /** @format */
 
+@import '../shared/colors';
+@import '../shared/functions/tint-and-shade';
+
 :root {
 	--selected: $blue-medium;
 	--selected-darken-5: darken($blue-medium, 5%);
diff --git a/targets/standalone/example.html b/targets/standalone/example.html
index 14359197..b5ec702c 100644
--- a/targets/standalone/example.html
+++ b/targets/standalone/example.html
@@ -23,6 +23,7 @@
 						},
 					},
 					nodeId: 'support',
+					theme: 'jpop',
 					groups: ['woo'],
 					entryOptions: {
 						primaryOptions: [