Change dark grey header and footer to black

Hi,

Currently your black setting for the theme is dark grey, how do I change it so it is true black or add a hex colour #020202?

 

Hello,

Paste this code in Custom CSS
Geocraft Settings > Theme Options > Styling Option > Custom CSS

Code:

.header_wrapper .header{
background:#020202;
}
.footer_wrapper {
background: #020202;
}

 

Thank you