How to change color for support page (login version)?

Hi,

I would like to change the display color for the support page. Currently it shows like this, http://gyazo.com/3fdf7c592e7f19a67e49586aee83a043. I would like to change this color from orange to, http://gyazo.com/c86cf57812ecc7facf8b73e291e75aa0. Is it possible?

Thanks,
Osmium Sy