[xwiki-users] border in livetable CSS

Hi, Somebody could explain me why xwiki uses $theme.pageContentBackgroundColor as border color in resources/js/xwiki/table/livetable.css ? A background color as border color : that's weird only for me ? That's a problem for us because if we want use a dark color as border, columns label are unreadable (dark on dark). Why not use border color from color theme instead ? Thank you Best regards NCG