[Hueman] [ThemMyLogin] Login button color not following rest of theme

Hi,

I’m using the Hueman theme, along with Buddypress to create a login widget in the sidebar, then ThemeMyLogin to redirect to a custom login page instead of wordpress default. However the login button on that page is showing up as blue instead of white like all the other buttons.

Can this be fixed with a little CSS?

Problem page URL: https://techtalk-ciphe.org.uk/login/

Thanks,

Andy