My first post as I haven't been able to find an answer to this (but if it does exists elsewhere then the link would be great).
I'm using the excellent Collapsed Topics, and I've used the "Course Format" settings to change the "toggle foreground", "toggle foreground hover", "toggle background" and "toggle background hover" colours to white text on a blue background. This looks great and really livens up the course compared to the default grey. The issue that I have is that when the topic is hidden the text is dark grey which is hard to read against the blue, see image below. I suspect that this is part of the core settings of Moodle rather than to do with Collapsed Topics directly. What I'd like to do is change the hidden topic text colour to something that is more readable against the blue. I'm hoping that I can target this with CSS, but can't find the CSS selector name. Is anyone able to help with this (or indeed with a different solution)?