Forwarded message background color

I have been customizing the heck out of sqwebmail and it has been going 
well.  However, one attribute that I can't seem to change is the color of 
the background of a plain-text message that has been forwarded into 
sqwebmail.  It appears that there are a series of colors that sqwebmail 
automatically assigns to the background based on the depth of the 
forwarding.

I played with the parameters in sqwebmail.css and with the html templates 
and I've tried to find the code controlling this in the .c files, but with 
no luck.  Can you point me in the right direction?

Note:  I can adjust the background of a non-fowarded message as well as the 
background of an HTML message.  And I can adjust the text color of a 
forwarded message - it is just the background color that I can't seem to 
find.

Thanks,

Kayo

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