Color of Title of Blog posts and Post Sidebar

Hi,

I use BLACK color as background on my site. I use child Rife theme with minimal customization.

Have two questions:
1) default Blog list page: when I hovering on Post Title on the blog list it gets the color of Link. This is correct. But if I hover over empty space of this section, very close to title but not over any characters, it stays Black. And I can’t find out where I can change this behavior.

2) the very similar problem with color of Post Sidebar Widget Titles – hovering over them makes them Black.

As I said, I use the Black background and everything was fine, but these issues make me really unhappy.

Thanks for any advice!