diff --git a/plugin.json b/plugin.json
index 78c6a5a..5f8f4b3 100644
--- a/plugin.json
+++ b/plugin.json
@@ -4,7 +4,7 @@
      "version": "0.0.1",
      "theme": true,
      "require": {
-          "piwik": ">=3.13.1-stable,<4.0.0-b1"
+          "piwik": ">=3.13.1-stable"
      },
      "stylesheet": "stylesheets/theme.less",
      "javascript": "javascripts/theme.js",
diff --git a/stylesheets/components/_widget.less b/stylesheets/components/_widget.less
index 495e3ca..a52daa7 100644
--- a/stylesheets/components/_widget.less
+++ b/stylesheets/components/_widget.less
@@ -1,5 +1,5 @@
 .widget {
-     background-color: transparent;
+     background-color: @theme-color-background-base;
      box-shadow: none;
      border: none !important;
 
diff --git a/stylesheets/theme.less b/stylesheets/theme.less
index 96c8d46..edd0ffe 100644
--- a/stylesheets/theme.less
+++ b/stylesheets/theme.less
@@ -1,6 +1,5 @@
 @import "_colors";
 @import "_variables";
-
 @import "components/_admin_users_list";
 @import "components/_button";
 @import "components/_card";
@@ -11,7 +10,6 @@
 @import "components/_sparkline";
 @import "components/_visitor_log";
 @import "components/_widget";
-
 @import "components/_login";
 @import "components/_charts";
 @import "components/_maps";
@@ -20,10 +18,8 @@
 @theme-color-background-base: #faf9f6;
 @theme-color-header-background: #faf9f6;
 @theme-color-header-text: #323036;
-
 @theme-color-widget-title-background: transparent;
 @theme-color-widget-title-text: #323036;
-
 @theme-color-menu-contrast-text: rgba(0, 0, 0, 0.54);
 @theme-color-menu-contrast-textActive: #828089;
 @theme-color-menu-contrast-textSelected: #ceccd2;