Error Message Feedback

Validating 

I've got this message regarding Errors in my .css:  Property font-color doesn't exist : #fbfae5 
and Warnings repeatedly:  Line : 5 (Level : 1) You have no color with your background-color : #box1 

I can't find information about what is an existing color (as the one I've defined obviously "exist" on my screen).

Regarding the warnings I wonder what "Level: 1" is and as I've stated the background-color ( 
http://www.tankekraft.net/Britt/britt.css
) what is the meaning with this warning?

All the best,
Kjell
___________________________
TANKEkraft . 031-68 46 00
e-post: kjell@tankekraft.net
Hantverksvägen 15 . 436 33  Askim