Help for HTML Validator !

Dear Sir/Madam,

I have a problem for html code validity check,and I want to get some help from you.

When I check this page below on http://validator.w3.org/ :

http://www.power-depot.com/sitemap.htm


You can see the detail here: http://validator.w3.org/check?uri=http%3A%2F%2Fwww.power-depot.com%2Fsitemap.htm&charset=%28detect+automatically%29&doctype=%28detect+automatically%29

It's has a wrong for "there is no attribute "COLOR""

I want konw what I should do to for this problem.

Thanks a lot!

Best Regards,
Ping