change caption style in lightbox view? 7.0

Hi! Did you every find a solution to this? I am trying to do the same thing.

On 8/13/2020 at 9:27 PM, rjackson said:

Site URL: https://chartreuse-earthworm-a73r.squarespace.com/breishisi

Hi there,

I am using the Avenue 7.0 template. There does not seem to be any way to change the way captions in the lightbox appear. They are white text over a black box upon hover. 

I would like the caption to appear in black below the image, not overlaid over it. Does anyone know how to do this? 

I saw some posts about CSS to change captions upon hover, but not in the lightbox...

Thank you!

Saw you changed it to white under image, is it correct