I ran into another FireFox issue.

You can reproduce this if you go to: http://cutesoft.net/example/xmloutput.aspx ( in FireFox)
Switch to HTML view and paste:

<div style="background-color: #FF6600; color: #FFFFFF;">Hello This is a test </div>

Then switch to Normal view and it looks good, but if you go back to HTML view it will replace all colors with #000000
making the entire div black (if you go back to normal view).

Can anyone else verify this?