Changing #Swipebox-top-bar…or something

Grateful for advice on changing the color/opacity of #swipebox-top-bar, without losing the title and exit button. (Or disinheriting #swipebox-title #swipebox-top-bar.)

The prob: the #swipebox-top-bar obscures images taller than 600px (when viewed on laptop screens.) I tried setting opacity:0, also reducing its height/width. But any such fiddling also affects -title (which I’ve re-positioned into a caption.)

Here’s a test page. (Search for the phrase, “Help me. Help me please.”)

Thanks again-

https://wordpress.org/plugins/responsive-lightbox/