Merge pull request #1486 from cg2121/about-dialog-styling

UI: Change about dialog bottom color (light theme)

UI/data/themes/Default.qss

@@ -133,7 +133,7 @@ QLabel#errorLabel {
 }
 
 * [themeID="aboutHLayout"] {
-	background-color: rgb(169, 169, 169);
+	background-color: #DCD9D7;
 }
 
 /* Preview background color */