White on white text when using Gallery theme and Members plugin

Not sure if this is a theme or plugin style problem.

On my registration page I have some text which is taken from the Subscription Plan Description.

If I use the Lightroom preset style in Gallery it looks fine, if I use Darkroom it is unreadable.

Is there somewhere in Members that I can style the text via the admin panel or is there something I can do in the Gallery CSS to fix it?