diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index a811cb7..8cfd288 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -1341,7 +1341,7 @@ module ApplicationHelper
     end.join("\n")
 
     content_tag('div', content_tag('label', _('Profile organization'), :for => 'template-options', :class => 'formlabel') +
-      content_tag('p', _('Your profile will be created according to the selected template. Click on the options to view them'), :style => 'margin: 5px 15px;padding: 0px 10px;') +
+      content_tag('p', _('Your profile will be created according to the selected template. Click on the options to view them.'), :style => 'margin: 5px 15px;padding: 0px 10px;') +
       content_tag('ul', radios, :style => 'list-style: none; padding-left: 20px; margin-top: 0.5em;'),
       :id => 'template-options',
       :style => 'margin-top: 1em'
diff --git a/app/views/account/_signup_form.rhtml b/app/views/account/_signup_form.rhtml
index 39c81c3..ceedf0f 100644
--- a/app/views/account/_signup_form.rhtml
+++ b/app/views/account/_signup_form.rhtml
@@ -1,4 +1,6 @@
-<%= error_messages_for :user, :person %>
+<% @profile_data = @person %>
+
+<%= error_messages_for :user, :person, :header_message => _('The account could not be created') %>
 
 <% labelled_form_for :user, @user, :html => { :multipart => true, :id => 'signup-form' } do |f| %>
 
diff --git a/plugins/stoa/lib/ext/person.rb b/plugins/stoa/lib/ext/person.rb
index 8dd48f0..093dc46 100644
--- a/plugins/stoa/lib/ext/person.rb
+++ b/plugins/stoa/lib/ext/person.rb
@@ -11,7 +11,7 @@ class Person
 
   def usp_id_or_invitation
     if usp_id.blank? && !is_template && (invitation_code.blank? || !invitation_task)
-      errors.add(:usp_id, "can't register without usp_id or a valid invitation code")
+      errors.add(:usp_id, "is being used by another user or is not valid")
     end
   end
 
diff --git a/plugins/stoa/lib/stoa_plugin.rb b/plugins/stoa/lib/stoa_plugin.rb
index 64e2ee1..cb2c27e 100644
--- a/plugins/stoa/lib/stoa_plugin.rb
+++ b/plugins/stoa/lib/stoa_plugin.rb
@@ -19,9 +19,9 @@ class StoaPlugin < Noosfero::Plugin
 
   def signup_extra_contents
     lambda {
-      content_tag(:div, labelled_form_field(_('USP number'), text_field_tag('profile_data[usp_id]', '', :id => 'usp_id_field')) +
+      content_tag(:div, labelled_form_field(_('USP number'), text_field(:profile_data, :usp_id, :id => 'usp_id_field')) +
       content_tag(:small, _('The usp id grants you special powers in the network. Don\'t forget to fill it with a valid number if you have one.'), :id => 'usp-id-balloon') +
-      content_tag('p', _("This usp number is not valid or doesn't exists"), :id => 'usp-id-invalid') +
+      content_tag('p', _("Either this usp number is being used by another user or is not valid"), :id => 'usp-id-invalid') +
       content_tag('p', _('Checking usp number...'), :id => 'usp-id-checking'), :id => 'signup-usp-id') +
       content_tag('div', required(labelled_form_field(_('Birth date (yyyy-mm-dd)'), text_field_tag('birth_date', ''))) +
       content_tag(:small, _('Confirm your birth date. Pay attention to the format: yyyy-mm-dd.'), :id => 'usp-birth-date-balloon'), :id => 'signup-birth-date', :style => 'display: none') +
diff --git a/plugins/stoa/public/style.css b/plugins/stoa/public/style.css
index c53e52e..7a42189 100644
--- a/plugins/stoa/public/style.css
+++ b/plugins/stoa/public/style.css
@@ -31,7 +31,7 @@
   padding: 5px 10px 45px 10px;
   margin: 0;
   line-height: 1.5em;
-  background: transparent url(/images/orange-balloon.png) bottom center no-repeat;
+  background: transparent url(/images/gray-balloon.png) bottom center no-repeat;
   position: absolute;
   z-index: 2;
   right: -150px;
@@ -50,7 +50,7 @@
 }
 
 #usp-id-invalid{
-  color: #FFA000;
+  color: #7f0000;
 }
 
 #usp-id-checking {
diff --git a/public/images/gray-balloon.png b/public/images/gray-balloon.png
new file mode 100644
index 0000000..fbe6cb2
Binary files /dev/null and b/public/images/gray-balloon.png differ
diff --git a/public/images/gray-bg.png b/public/images/gray-bg.png
new file mode 100644
index 0000000..c41a4af
Binary files /dev/null and b/public/images/gray-bg.png differ
diff --git a/public/images/passwords_match.png b/public/images/passwords_match.png
index a837436..6776e7e 100644
Binary files a/public/images/passwords_match.png and b/public/images/passwords_match.png differ
diff --git a/public/images/passwords_nomatch.png b/public/images/passwords_nomatch.png
index 1cc786b..6f5ce9e 100644
Binary files a/public/images/passwords_nomatch.png and b/public/images/passwords_nomatch.png differ
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 5e5f5b6..b39d640 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -5613,7 +5613,7 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
 }
 
 .unavailable {
-  color: #FFA000;
+  color: #7f0000;
 }
 
 .checking {
@@ -5656,13 +5656,13 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
 }
 
 #signup-form input.invalid_input {
-  border: 2px solid #FFA000;
+  border: 2px solid #7f0000;
   background: #FFF;
   padding: 5px 30px 8px 5px;
 }
 
 #signup-form input.valid_input {
-  border: 2px solid #88BD00;
+  border: 2px solid #005000;
   background: #FFF;
   padding: 5px 30px 8px 5px;
 }
@@ -5760,7 +5760,7 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
 }
 
 #signup-form .invalid {
-  border-color: #FFA000;
+  border-color: #7f0000;
   background-image: url(/images/passwords_nomatch.png);
 }
 
@@ -5768,7 +5768,7 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
   border: none;
   padding: 0px;
   background: transparent;
-  color: #FFA000;
+  color: #7f0000;
 }
 
 #signup-form .checking {
@@ -5784,13 +5784,13 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
 }
 
 #signup-form .validated {
-  border-color: #88BD00;
+  border-color: #005000;
   background-image: url(/images/passwords_match.png);
 }
 
 #signup-form span.validated {
   background: transparent;
-  color: #88BD00;
+  color: #005000;
 }
 
 #signup-domain {
@@ -5838,7 +5838,7 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
   padding: 5px 10px 45px 10px;
   margin: 0;
   line-height: 1.5em;
-  background: transparent url(/images/orange-balloon.png) bottom center no-repeat;
+  background: transparent url(/images/gray-balloon.png) bottom center no-repeat;
   position: absolute;
   z-index: 2;
   right: -150px;
@@ -5899,11 +5899,11 @@ li.profile-activity-item.upload_image .activity-gallery-images-count-1 img {
 #content #signup-form .submit {
   border: 0;
   padding: 8px 36px 12px;
-  background: transparent url(/images/orange-bg.png) left center repeat-x;
+  background: transparent url(/images/gray-bg.png) left center repeat-x;
   font-size: 17px;
-  color: #FFFFD5;
+  color: #FFF;
   text-align: center;
-  text-shadow: #d45500 0 -1px 0;
+  text-shadow: #424242 0 -1px 0;
   border-radius: 7px;
   -moz-border-radius: 7px;
   -webkit-border-radius: 7px;
--
libgit2 0.21.2