added white text on grey asset to mailer

app/mailers/notifier.rb

@@ -2,12 +2,12 @@ class Notifier < ActionMailer::Base
   include Magent::Async
   
   default :from => "no-reply@joindiaspora.com"
-  ATTACHMENT =  File.read("#{Rails.root}/public/images/diaspora_caps.png")  
+  ATTACHMENT =  File.read("#{Rails.root}/public/images/diaspora_white_on_grey.png")  
 
   def new_request(recipient, sender)
     @receiver = recipient
     @sender = sender
-    attachments["diaspora_white.png"] = ATTACHMENT 
+    attachments["diaspora_white_on_grey.png"] = ATTACHMENT 
 
     mail(:to => "#{recipient.real_name} <#{recipient.email}>",
     :subject => "new Diaspora* friend request from #{@sender.real_name}", :host => APP_CONFIG[:terse_pod_url])

app/views/notifier/new_request.html.haml

@@ -43,7 +43,7 @@
       }
   %body
     %header
-      = image_tag 'diaspora_white.png'
+      = image_tag attachments['diaspora_white_on_grey.png'], :alt => "DIASPORA"
     #container
       %p
         Hello #{@receiver.profile.first_name}!

app/views/notifier/request_accepted.html.haml

@@ -43,7 +43,7 @@
       }
   %body
     %header
-      = image_tag 'diaspora_white.png'
+      = image_tag attachments['diaspora_white_on_grey.png'], :alt => "DIASPORA"
     #container
       %p
         Hello #{@receiver.profile.first_name}!