change mail sent text color

I am trying to change the text color in the mailbox under subjects, outbox. I tried to check with Firebug and although it shows the correct text it shows the code as above line 1 in common.css but it is not there. These are the messages that I had sent.

I have added an image to show the black font I am trying to change to #ccc

In firebug I cannot see the css! I only see inherited from body .... common.ccc but I cannot find the 000000 text!

i added html to my email sending that helkps alot with colour and pictures very easy to add it to look in forums for it makes a big difference to be ablke to use html in your mailer