change custom logo on two pages

I customized modularity for a friend with a logo, as you can see here: https://www.theageofriesling.com ; but he wants the logo to disappear on two pages of his site.
https://www.theageofriesling.com/?page_id=260
https://billmayer.site.aplus.net/wordpress/?page_id=125

I think it would be better to swap it with a slightly dimmed logo (one printed almost black).

In either case what is the script to make the logo vanish or change for these pages.
Thanks!