Adjusting font color changes

(cherry picked from commit be33541)

Author: root

src/styles/_custom_variables.scss

@@ -98,8 +98,8 @@
   --ds-footer-padding-bottom: 0;
   --ds-footer-logo-height: 50px;
 
-  --ds-home-news-link-color: #D2FC93;
-  --ds-home-news-link-hover-color: #{$ds-home-news-link-color};
+  --ds-home-news-link-color: #{$ds-home-news-link-color};
+  --ds-home-news-link-hover-color: #{darken($ds-home-news-link-color, 15%)};
   --ds-home-news-background-color: #{$gray-200};
 
   --ds-breadcrumb-bg: #{$gray-200} !important;

src/themes/dspace/styles/_theme_sass_variable_overrides.scss

@@ -83,7 +83,7 @@ $navbar-dark-color: #fff;
 
 /*** CUSTOM DSPACE VARIABLES ***/
 
-$ds-home-news-link-color: #92c642;
+$ds-home-news-link-color: #D2FC93;
 $ds-header-navbar-border-bottom-color: #92c642;
 
 $ds-breadcrumb-link-color: #154E66 !default;