Modified the icon, and colors

docs/stylesheets/extra.css

 [data-md-color-scheme="default"] {
-  --md-primary-fg-color:        #ff5522;
+  --md-primary-fg-color:        #007e71;
   --md-accent-fg-color:         #332f95;
 }
 
 [data-md-color-scheme="slate"] {
-  --md-primary-fg-color:        #ff5522;
-  --md-primary-bg-color:        #2e303d;
+  --md-primary-fg-color:        #007e71;
+  --md-primary-bg-color:        #333333;
 }

mkdocs.yml

-site_name: Database Repository
+site_name: "DBRepo: Database Repository"
 repo_url: https://gitlab.phaidra.org/fair-data-austria-db-repository/fda-services
 repo_name: fda-services
 site_author: FAIR Data Austria
@@ -22,8 +22,8 @@ nav:
 extra_css:
   - stylesheets/extra.css
 theme:
-  favicon: images/favicon.png
-  logo: images/logo.png
+  favicon: images/favicon_green.png
+  logo: images/favicon.png
   font:
     text: IBM Plex Sans
     code: IBM Plex Mono