Superimposed text and image- Not working as it should

[maryhelenmaccarth]

Describe the bug
I’ve been doing some testing.

By superimposing the image with the title, the excerpt, and the author, the excerpt remains in black making it impossible to read it. The other elements i.e. title, author and date remain white.

Depending on the theme, there are also drawbacks with the feature image layout.

To Reproduce
Steps to reproduce the behavior:

1. Go to Hompage Block'
2. Click on 'Grild'. Select two columns.
3. Click on 'Show media behind'.
4. Click on "Save" and "Preview"

Screenshots
https://imgur.com/a/b6xrwfL Twenty Twenty one and Theme Publication
The link must be opened in a new window in Edge or Chrome, outside github, order for its content to be visible.

Expected behavior
The excerpt should be in white. Or at least, have the option to selec #fff as a color. In fact, this option exists, but when selected, nothing happens. @kgagne

P.S: It was my intention to share the code of said block, but it was not possible to do it and preserve the privacy of the website link that belongs to a client.