Conditional CSS to show/hide download image button

I’m not sure where to post this so please move if needed.

Right now I have the image download button hidden in the lightbox, plus right-clicking disabled to give the illusion of image safety.

But, I have a private category only visible to paying members where I would like it visible, but only if they ‘agree’ to it.

So basically, I’m looking for the ability to turn the image download button on conditionally per topic based upon either a yes/no question in the post, or possibly a checkbox, which I’m sure would move into plugin territory and this could moved to marketplace…

This is quite involved. You’re probably better off proposing it as a paid task in the #marketplace.