Action button doesn't look good in Gin dark mode

Problem/Motivation

The button on the cards does not look right in dark mode in Gin. (Also need to check the modal popup button)

Steps to reproduce

Install latest Drupal and Gin, enable the Gin theme and set it as your admin theme. Go to Gin settings and enable Dark Mode. Visit Project Browser pages and note the button color.

Proposed resolution

Apply CSS to make the button look correct in BOTH light mode and dark mode with Gin.